Allow indenting multiple list items at the same time.

Previously, TinyMCE only allowed indenting a single list line at a
time. This change makes it so multiple lines may be selected, although
it maintains the restriction that the first list item cannot be
indented any further.
#6838 Fixed createLookupTable uses different delimiters

See http://www.tinymce.com/develop/bugtracker_view.php?id=6838 for details.
Added lastLevel to BeforeAddUndo level event so it's easier to block undo level creation based.
Fixed so all track changes junk such as comments, deletes etc gets removed when pasting from Word.
Fixed broken unit test for an edge case on Gecko.
Fixed bug where the selection would be at the wrong location sometimes for inline editor instances.
Merge pull request #360 from danchr/indent

Allow indenting multiple list items at the same time.
Merge branch 'master' of github.com:tinymce/tinymce
Merge pull request #358 from jasper-d/patch-1

#6838 Fixed createLookupTable uses different delimiters
Merge branch 'master' of github.com:tinymce/tinymce
Fixed so both comma and space can be used as a delimiter for some of the schema options.
Updated changelog.txt