Added event so it opens the TextEditor, if you click on "Öffne AREL Script"
Version 2: A template will be copied to /currentProject/ and abstractAugmentation gets the fullpath of this template.

TextEditor only opens this file
Change: Anfang die Implementierung in die Klasse customUserEvent zu outsourcen
Reworked customUserEvents. All abstractAugmentation have one customUserEvent-class and in this class is the filePath, which leads to the file (in /currentProject/).

Not sure, if I should make an subfolde like /currentProject/UserEvents/ or so.
Also implemented the things for issue #95
Merge remote-tracking branch 'origin/master' into WorkBareus