LDEV-2117 Fixed message when user tries to add a non tool/parrallel act to the support act.. it now properly refers the activity type they tried to add
LDEV-2105 * FCKEditor's new tag width set up * ajax submitting of fckeditors and contentFolderId variable fixed in option lists * new validation rule was introduced: One of the answers should have a grade of 100% * prevent throwing of errors while adding/removing options and units with wrong data * export lesson fixed * adding/removing of instruction files fixed