Replaced duplicate TR_REMOVE_SELECTION with TR_REMOVE_LINE_SELECTION
Removed unused strings, replaced TR_MOVE_LINE_UP and TR_MOVE_LINE_DOWN with TR_MOVE_LINE_SELECTION_DOWN TR_MOVE_LINE_SELECTION_UP
Removed unused strings.
Removed duplicate 'find with word' and 'open project' strings.
Replaced duplicate 'insert comment title' string.
Merge remote-tracking branch 'upstream/master' into duplicates
Removed duplicate strings - 'indent less', 'close current tab' and 'insert horizontal line'
Merge pull request #1672 from goblincoding/duplicates

Removed String Duplicates