Correct HeaderIds plugin guide
Allow the possibility to complete empty an editing hosts

Updated deleting operations to allow the possibility to completely empty an
editing host of its contents (ie: CTRL+A, DEL).
Lint recent code changes in engine.js
Enable deletion of solo <p><br></p> in editable

Calling delete on the given markup:
<editable><block><br>[]</block></editable>
should results in:
<editable>[]</editable>
Remove cursor-styles in table after editing
Fix cell-selection after changing header status
Fix header-selection bugfix
Stop appending elements to rows after rowspans
Allow split of single active cell with row/colspan
Fix table styles and activation of style-buttons

* Formatting columns, rows and cells now work in combination
* Activation-status of style-buttons now correctly displayed
Add several table styles to boilerplate-css
Minor code-cleanup for table-styles-fix
Added missing german translations for table plugin
Declare `pos` only once
Add TextColor plugin guides

Taken from c988a742f92eba81f962161cb7bf9b3fbfc5a730
Merge branch 'commercial-hotfix-batu-fr1' of github.com:alohaeditor/Aloha-Editor into hotfix-table-spanappend

Conflicts:
	build/hotfix-changelog.md
Merge branch 'hotfix-table-header-selection' of git://github.com/maschonber/Aloha-Editor into commercial-hotfix-batu-fr1

Conflicts:
	build/hotfix-changelog.md
Merge branch 'hotfix-table-splitactivecell' of git://github.com/maschonber/Aloha-Editor into commercial-hotfix-batu-fr1

Conflicts:
	build/hotfix-changelog.md
Merge branch 'hotfix-table-styles' of git://github.com/maschonber/Aloha-Editor into commercial-hotfix-batu-fr1

Conflicts:
	build/hotfix-changelog.md
	src/plugins/common/table/lib/table-plugin.js
Fixed merge error