[BUGFIX] t3editor not visible with TYPO3 on Windows

The template for t3editor contains CRLF line endings on Windows systems. To
prevent JS errors and to make the t3editor visible the CR parts of the line
endings must be removed.

Change-Id: If4f126c46ab243e616292a60563ebe4bea3fd624
Fixes: #30026
Branches: 4.6
Reviewed-on: http://review.typo3.org/5058
Reviewed-by: Oliver Hader
Reviewed-by: Tobias Liebig
Tested-by: Tobias Liebig