made name of default template folder configurable

The name of the folder with the templates is now configurable. Instead
of choosing a name from the folder list you can now store the name of
your template folder in the script.
Revert "made name of default template folder configurable"

This reverts commit e9e3ab4d9f028aa4148e097bd74fb125f7354f17.
introduced the property defaultTemplateFolder

with defaultTemplateFolder the user can choose the name of the folder
to search for templates.
Merge pull request #5 from KarstenSchulz/master

Name of of the template folder configurable in the script (in addition to choose on from the folder list, if the folder "Template" does not exist).