This is a major refactor of user interface context, frame, dialog
and inspector classes, including adding several new classes which
generalize managing inspectors/dialogs (which are now subclasses
of window).
New classes:
* ve.ui.Window.js - base class for inspector and dialog classes
* ve.ui.WindowSet.js - manages mutually exclusive windows, used
by surface and context for dialogs and inspectors respectively
* ve.ui.DialogFactory - generates dialogs
* ve.ui.IconButtonWidget - used in inspector for buttons in the head
Refactored classes:
* ve.ui.Context - moved inspector management to window set
* ve.ui.Frame - made iframes initialize asynchronously
* ve.ui.Dialog and ve.ui.Inspector - moved initialization to async
initialize method
Other interesting bits:
ve.ui.*Icons*.css, *.svg, *.png, *.ai
* Merged icon stylesheets so all icons are available inside windows
* Renamed inspector icon to window
ve.ui.*.css
* Reorganized styles so that different windows can include only
what they need
* Moved things to where they belonged (some things were in strange places)
ve.init.Target.js, ve.init.mw.ViewPageTarget.js, ve.init.sa.Target.js
* Removed dialog management - dialogs are managed by the surface now
ve.ui.*Dialog.js
* Renamed title message static property
* Added registration
ve.ui.*Inspector.js
* Switch to accept surface object rather than context, which conforms
to the more general window class without losing any functionality
(in fact, most of the time the surface was what we actually wanted)
ve.ui.MenuWidget.js, ve.ui.MWLinkTargetInputWidget.js
* Using surface overly rather than passing an overlay around
through constructors
Change-Id: Ifd16a1003ff44c48ee7b2c66928cf9cc858b2564
