GUI: updated create/import publication wizard

- Improved input form and check for similar publications
  when creating and importing publications to Perun.
- Fixed publications sorting to be alphabetical.
- Custom texts on empty result in publications tables.
Merge pull request #113 from zlamalp/pubs

GUI: updated create/import publication wizard
CONTROLLER: sort FacilityState objects

 - default sort FacilityState objects by facility name
 before returning to GUI
Merge pull request #106 from zlamalp/facility

CONTROLLER: sort FacilityState objects
Fix AuthzRoles class

- Use Set<Integer> instead of List<Integer> for no duplicates of these IDs