* The JSON file for the Apex theme was exactly identical to the
MediaWiki theme. If the icons are the same, there's no need to
duplicate it.
* Since we now only have one definition used for all themes,
ResourceLoaderOOUIImageModule is overkill and we can use the
slightly simpler ResourceLoaderImageModule.
* Remove "prefix": "oo-ui-icon" from the JSON file, since it is
overridden in the module definition by "selectorWithoutVariant" and
"selectorWithVariant".
Change-Id: I1d579873459e079369fd13350a9cb00939c2b76b
Mainly used for mobile actions, and should be appended to the
overlay - this widget assumes it should appear and then fade out
with some confirmation message.
Also moved 'doubleCheck' icon to the ooui definitions, including
an inverted icon that is necessary for this widget.
Bug: T141404
Change-Id: I67a44962eaee6b7bd8cac26dcb5277177fa5d224
