General adjustments, styling etc.

|| add- and edit-page ||
- custom style added
- custom form template
- fixed options for bundesländer
- adjustments on formstyle
- removed link on gsolution logo

|| models.py ||
- fixed options for bundesländer

|| forms.py ||
- fixed options for bundesländer

|| landing_page.html ||
- fixed size off tablerows and -cells
- adjustments on formstyle
- adjustments on filterstyle
- fixed userrights (only logged members can see droped projects)
- removed link on gsolution logo

|| details.html ||
- removed link on gsolution logo
- adjustments on cell length

|| landing_styles.css ||
- added some stuff for styling