Add light icon version

Fixes #5

LICENSE.md

@@ -17,6 +17,10 @@ The above copyright notice and this permission notice shall be included in all c
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+## QR code icon
+
+The icons `assets/qr-icon*.svg` (used in `src/icons/icon-small-*.svg`) are made by [@rugk](https://github.com/rugk) with Inkscape. They are licensed under the [CC-BY 4.0](http://creativecommons.org/licenses/by/4.0/) license.
+
 ## Other third-party components
 
 * [`popup/img/check.svg`](popup/img/check.svg) by Mozilla, license: [MPL v2.0](https://www.mozilla.org/en-US/MPL/2.0/)

src/_locales/de/messages.json

@@ -49,6 +49,19 @@
     "message": "Diese option ist deaktiviert, weil sie von deinem Systemadministrator festgelegt wurde.",
     "description": "The title (tooltip) shown, when hovering over a disabled, managed option."
   },
+
+  "optionPopupIconColor": {
+    "message": "Popupicon-Stil: ",
+    "description": "This is an option shown in the add-on settings."
+  },
+  "optionPopupIconColorDark": {
+    "message": "Dunkel",
+    "description": "The option for the dark popup icon color version."
+  },
+  "optionPopupIconColorLight": {
+    "message": "Hell",
+    "description": "The option for the light popup icon color version."
+  },
   "optionQrCodeColor": {
     "message": "QR-Code-Farbe: ",
     "description": "This is an option shown in the add-on settings."