Update all meta files.
Some more template improvements
- Better config icon.
- Renamed media to files (only for GUI).
- Add datatable function for motion and asssignemnt overview table. Removed old filter/sorting code.
- Some more template styling work.
Updated translation.
Merge pull request #658 from emanuelschuetze/template-improvements2

Some more template improvements and updated translations
Merge pull request #654 from normanjaeckel/MetaFiles

Update all meta files.
Update view contains possibility for managers to change the workflow. Also other small fixes.