* TODO.tasks: Fixed xml format.

	* plugins/editor/aneditor.cxx: Added code to trap 'tab' key (does not
	work yet).

	* plugins/editor/text_editor.c, plugins/editor/text_editor.h: Code
	cleanups.

	* plugins/gtodo/interface.c, plugins/gtodo/libgtodo.c: Fixed xml
	format during save (removed unwanted text nodes). Fixed scrollbars.