Objectives:
* Got rid of mw prefixing in tools, inspectors and dialogs
* Simplify tool classes so they can be generically used as items in bars, lists and menus
* Add support for a catch-all toolbar group
* Simplify tool registration, leaning on tool classes' static name property
* Move default commands to command registry
* Move default triggers to trigger registry
* Get language tool working in standalone
Change-Id: Ic97a636f9a193374728629931b6702bee1b3416a
Mostly as a demonstration of how easy this is with MWExtensionNode.
The icon was chosen with the following criteria:
1. Recognisable (the ankh is quite common in popular culture, right?)
2. Doesn't look idiotic to academics (I've consulted an Egyptology
PhD and they can confirm it's not the glyph for penis)
3. Renders well at <16x16
That said it does look a little like a stick man...
Bug: 43118
Change-Id: I9f9e8af501401866bfeecf0eec3690a705fbd4db
