TextExpander Snippets Enhancements

Add / Restructure the snippets to reflect a respective ( not ) commented tag and normalise the shortcuts.

    The c-author tag can be used to automate the input of the own signature — a trailing space should be added to correctly style the output. Left blank, if the author wants to stay anonymous. 

Signed-off-by: Stefano F. Rausch <developer@stefano.rausch-e.net>