Fix inline image dialog javascript error

http://www.tinymce.com/develop/bugtracker_view.php?id=6717
Focus the editor after deleting the image so that the selection resets
and the old selection (where the image has the selection) isn't used,
which previously caused a javascript error on save.
change pageX/Y to clientX/Y for correct caret location when page scrolled
Merge pull request #334 from monkeydiane/fixImageDialogError

Fix inline image dialog javascript error
Merged in a few fixes to compat3x from WP.
Fixed DOM ready IE fallback issue where interactive mode is set when the body is null.
Remove extra br tag for IE9/10

http://www.tinymce.com/develop/bugtracker_view.php?id=6610
Only add a bogus br tag on empty editors for IE < 9 instead of IE < 11,
as IE9 and IE10 render the elements properly and don't need the extra
tag.
Merge pull request #336 from annettem/dragDropWithScrollFix

change pageX/Y to clientX/Y for correct caret location when page scrolle...
Fixed Gecko/Standards caret range retrieval issue.
Updated changelog.txt
Fixed bug where it wasn't possible to delete tables on Chrome if you placed the selection within all the contents of the table.
Fixed bug where older IE versions wouldn't properly insert contents into table cells when editor focus was lost.