Bugfix: Autocomplete input text disappears

If user selects object that is already assigned
Merge pull request #1454 from reciprocity/feature/autocomplete-assign-itself

Bugfix: Autocomplete input text disappears
Bugfix: Autocomplete with partialy entered text

validation error when creating new object
Merge pull request #1455 from reciprocity/feature/autocomplete-entered-text

Bugfix: Autocomplete with partialy entered text
Merge remote-tracking branch 'origin/release/0.9a29' into develop