--- a/devtools/shim/aboutdevtools/images/external-link.svg
+++ b/devtools/shim/aboutdevtools/images/external-link.svg
@@ -1,4 +1,7 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
   <path fill="context-fill #003eaa" d="M14.923 1.618A1 1 0 0 0 14 1H9a1 1 0 0 0 0 2h2.586L8.293 6.293a1 1 0 1 0 1.414 1.414L13 4.414V7a1 1 0 0 0 2 0V2a1 1 0 0 0-.077-.382z"/>
   <path fill="context-fill #0060df" d="M14 10a1 1 0 0 0-1 1v2H3V3h2a1 1 0 0 0 0-2H2a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1v-3a1 1 0 0 0-1-1z"/>
 </svg>

--- a/devtools/shim/aboutdevtools/images/feature-console.svg
+++ b/devtools/shim/aboutdevtools/images/feature-console.svg
@@ -1,9 +1,11 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <svg width="222px" height="122px" viewBox="0 0 222 122" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
     <!-- Generator: Sketch 45.2 (43514) - http://www.bohemiancoding.com/sketch -->
     <title>Console</title>
     <desc>Created with Sketch.</desc>
     <defs></defs>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
         <g id="2017.06.07.Firefox.DevEdition-[white]" transform="translate(-502.000000, -2865.000000)">
             <g id="Group-6" transform="translate(145.000000, 2865.000000)"></g>

--- a/devtools/shim/aboutdevtools/images/feature-debugger.svg
+++ b/devtools/shim/aboutdevtools/images/feature-debugger.svg
@@ -1,9 +1,11 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <svg width="222px" height="122px" viewBox="0 0 222 122" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
     <!-- Generator: Sketch 45.2 (43514) - http://www.bohemiancoding.com/sketch -->
     <title>Debugger</title>
     <desc>Created with Sketch.</desc>
     <defs></defs>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
         <g id="2017.06.07.Firefox.DevEdition-[white]" transform="translate(-843.000000, -2865.000000)">
             <g id="Group-11" transform="translate(892.000000, 2893.000000)">

--- a/devtools/shim/aboutdevtools/images/feature-inspector.svg
+++ b/devtools/shim/aboutdevtools/images/feature-inspector.svg
@@ -1,9 +1,11 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <svg width="222px" height="122px" viewBox="0 0 222 122" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
     <!-- Generator: Sketch 45.2 (43514) - http://www.bohemiancoding.com/sketch -->
     <title>Inspector</title>
     <desc>Created with Sketch.</desc>
     <defs>
         <polygon id="path-1" points="82.3351726 27.0750512 82.3351726 54.149836 0.391390693 54.149836 0.391390693 0.000266310669 82.3351726 0.000266310669 82.3351726 27.0750512"></polygon>
     </defs>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">

--- a/devtools/shim/aboutdevtools/images/feature-memory.svg
+++ b/devtools/shim/aboutdevtools/images/feature-memory.svg
@@ -1,9 +1,11 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <svg width="222px" height="122px" viewBox="0 0 222 122" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
     <!-- Generator: Sketch 45.2 (43514) - http://www.bohemiancoding.com/sketch -->
     <title>Memory</title>
     <desc>Created with Sketch.</desc>
     <defs></defs>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
         <g id="2017.06.07.Firefox.DevEdition-[white]" transform="translate(-846.000000, -3508.000000)">
             <path d="M918,3609.05462 C918,3611.74049 920.178731,3613.9179 922.866215,3613.9179 L994.621505,3613.9179 C997.308989,3613.9179 999.48772,3611.74049 999.48772,3609.05462 L999.48772,3574.73675 C995.606387,3572.77699 992.938301,3569.64701 992.938301,3565.00403 C992.938301,3560.36017 995.606387,3557.23107 999.48772,3555.27131 L999.48772,3530.86328 C999.48772,3528.17742 997.308989,3526 994.621505,3526 L922.866215,3526 C920.178731,3526 918,3528.17742 918,3530.86328" id="Stroke-1" stroke="#0080FF" stroke-width="5" stroke-linecap="round"></path>

--- a/devtools/shim/aboutdevtools/images/feature-network.svg
+++ b/devtools/shim/aboutdevtools/images/feature-network.svg
@@ -1,9 +1,11 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <svg width="222px" height="122px" viewBox="0 0 222 122" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
     <!-- Generator: Sketch 45.2 (43514) - http://www.bohemiancoding.com/sketch -->
     <title>Network</title>
     <desc>Created with Sketch.</desc>
     <defs></defs>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
         <g id="2017.06.07.Firefox.DevEdition-[white]" transform="translate(-149.000000, -3171.000000)">
             <path d="M198.474304,3207.33333 L320.101069,3207.33333" id="Stroke-7" stroke="#031537" stroke-width="5" stroke-linecap="round" transform="translate(259.500000, 3206.500000) scale(1, -1) translate(-259.500000, -3206.500000) "></path>

--- a/devtools/shim/aboutdevtools/images/feature-performance.svg
+++ b/devtools/shim/aboutdevtools/images/feature-performance.svg
@@ -1,9 +1,11 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <svg width="222px" height="122px" viewBox="0 0 222 122" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
     <!-- Generator: Sketch 45.2 (43514) - http://www.bohemiancoding.com/sketch -->
     <title>Performance</title>
     <desc>Created with Sketch.</desc>
     <defs></defs>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
         <g id="2017.06.07.Firefox.DevEdition-[white]" transform="translate(-490.000000, -3508.000000)">
             <g id="Page-1-Copy" transform="translate(540.000000, 3527.000000)">

--- a/devtools/shim/aboutdevtools/images/feature-responsive-mode.svg
+++ b/devtools/shim/aboutdevtools/images/feature-responsive-mode.svg
@@ -1,9 +1,11 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <svg width="222px" height="122px" viewBox="0 0 222 122" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
     <!-- Generator: Sketch 45.2 (43514) - http://www.bohemiancoding.com/sketch -->
     <title>Responsive design mode</title>
     <desc>Created with Sketch.</desc>
     <defs></defs>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
         <g id="2017.06.07.Firefox.DevEdition-[white]" transform="translate(-843.000000, -3171.000000)">
             <g id="Group-23" transform="translate(902.000000, 3212.000000)" fill="#00C7D8">

--- a/devtools/shim/aboutdevtools/images/feature-storage.svg
+++ b/devtools/shim/aboutdevtools/images/feature-storage.svg
@@ -1,9 +1,11 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <svg width="222px" height="122px" viewBox="0 0 222 122" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
     <!-- Generator: Sketch 45.2 (43514) - http://www.bohemiancoding.com/sketch -->
     <title>Storage</title>
     <desc>Created with Sketch.</desc>
     <defs></defs>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
         <g id="2017.06.07.Firefox.DevEdition-[white]" transform="translate(-494.000000, -3171.000000)">
             <g id="Group-16" transform="translate(562.000000, 3192.000000)" stroke-width="5" stroke-linecap="round">

--- a/devtools/shim/aboutdevtools/images/feature-visual-editing.svg
+++ b/devtools/shim/aboutdevtools/images/feature-visual-editing.svg
@@ -1,9 +1,11 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <svg width="222px" height="122px" viewBox="0 0 222 122" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
     <!-- Generator: Sketch 45.2 (43514) - http://www.bohemiancoding.com/sketch -->
     <title>Visual Editing</title>
     <desc>Created with Sketch.</desc>
     <defs></defs>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
         <g id="2017.06.07.Firefox.DevEdition-[white]" transform="translate(-148.000000, -3508.000000)">
             <g id="Page-1" transform="translate(223.000000, 3529.000000)" stroke-linecap="round">