Now Ctrl+\ (Cmd+\ on Mac) will trigger the 'clear annotations' button
on the current context. Ideally we'd also bond to the 'clear' keyboard
button (ASCII 12) but it does not seem possible to do that yet.
Bug: 51507
Change-Id: I300ec1ffa237e51418ec429be39001f820f053ae
Objectives:
* Merge reference insert and edit dialogs
* Change workflow to put editing/creating a new reference first
* Add secondary page in dialog for selecting an existing reference
Changes:
*.php
* Cleanup unused files/messages
ve.ui.Dialog.css
* In the footer; make primary, constructive and destructive buttons
appear on the right; all others on the left
ve.ui.MWReferenceSearchWidget.js
* Fix documentation
* Remove create option and reuse section header items
ve.ui.MWReferenceInsertButtonTool.js,
ve.ui.MWReferenceEditButtonTool.js,
ve.ui.MWReferenceButtonTool.js
* Merge reference button tools
ve.ui.MWDialog.css
* Remove body styles, use padded option of layout instead
* Update selectors as per merging of dialogs
ve.ui.MWReferenceInsertDialog.js
ve.ui.MWReferenceEditDialog.js
ve.ui.MWReferenceDialog.js
* Merge reference dialogs
* Add buttons to switch between edit and select mode
ve.init.mw.ViewPageTarget.js
* Update reference button name as per merging of tools
ve.ui.SurfaceWidget.js
* New widget!
* Encapsulates a "sub-surface"
Bug: 51152
Bug: 50458
Change-Id: I8265febf4fd8f64d2ac40470ff033bac68b24d99
