[BUG_FIXED] Make "Text Direction RTL" command and "Text Direction LTR" command work without reloading file.

git-svn-id: svn://svn.tuxfamily.org/svnroot/notepadplus/repository/trunk@1302 f5eea248-9336-0410-98b8-ebc06183d4e3
[NEW] Document map follows the current text direction (RTL/LTR).

git-svn-id: svn://svn.tuxfamily.org/svnroot/notepadplus/repository/trunk@1303 f5eea248-9336-0410-98b8-ebc06183d4e3