Add hot key for pageUp and pageDown.
Include buildcommit flag
Implement aloha.metaview() for debugging
Introduce metaview module
Remove unrendered empty nodes after consuming overrides
Improve consumption of overrides to not leave artifacts
Correct some edge cases around toggling overrides
fix multiple-lines elements
Correct stacking of overrides
Map metaview controls to ctrl
Merge pull request #1241 from evindor/rects

Fix multi-line elements #1138
Ensure editable has at least 1em height
Introducing autoformat
Correct bug in removeVisualBreak around <br>s
Implement style unformatting
Fix trailing comma
Improve unformatting with stacked style nodes
Merge branch 'howling-mad-pageup-pagedowm-hotkeys' of github.com:najor/Aloha-Editor into howling-mad

Conflicts:
	src/typing.js
Merge pull request "Add hot key for pageUp and pageDown" #1235
Correct implemenation of page up/down