This moves the footer icon into the ResourceLoaderImage module
providing us a consistent way of serving image assets.
This means we no longer need to provide PNGs for icons
However, given mw-ui-icon-large is not large enough for the given
use case we do have to wrestle with icon styles and override them
to get the desired result. I think this is a small price to pay given
icons are now discoverable
Change-Id: I38b62c01fd930dcbfb73b95e6128885cb483f86e
Use i18n close label in the settings dialog since we have it instead of
hardcoding English. A cross is shown instead of the text so this change
may not be visible in all browsers.
Change-Id: I66284b04fe905cc8e460ea10b56c88cacd66ed28
Replace Mustache.js templates with template literals. An effort was made
to minimize additional refactoring, so feel free to ask for more but it
ain't coming in this PS.
Bug: T165036
Change-Id: I4a6a1d93a2922c3a9ef3ae93c47da17a35c644f0
