Cache number of children for profile field
officers patch fix: filter wrong bv groups.
Merge pull request #46 from fiedl/jb/631_cache_profile_field_children_count

Cache number of children for profile field
Merge pull request #47 from fiedl/jb/631_cache_corporate_vita_in_model

cached corporations instead of cached corporate vita
timeout error: adding timeout label instead of displaying nothing on the error page.
bug fix: local admins can edit profile fields of their users.

There has been a bug that allowed only global admins to modify or delete
profile fields of the users they are responsible for. This commit fixes
this behaviour. Local admins now can manage the profile fields of the
users they are responsible for.

uservoice tickets:
* no. 9: http://email.uservoice.com/c/ZD1kNTImaT01MzhmOTA5NDgzMmFjXzM5MDYzZjkxNmZlZGQzMWMyNDMzJTQwdXNlcnZvaWNlLmNvbSZoPTBmNDA5ZTNiZWQ5NjdmMDMxZWY0NjQxNTA2ZWM4NWU4Jmw9aHR0cCUzQSUyRiUyRndpbmdvbGYudXNlcnZvaWNlLmNvbSUyRmFkbWluJTJGdGlja2V0cyUyRjklM0ZlbWFpbF9sb2dpbl90b2tlbiUzRGExZWI3ZGVjMDdhY2RlMzZiZTM1NTA4YWRlN2E3YzYxJTI2dHJhY2tpbmdfY29kZSUzRDViNjllNjU3Zjk5YjhkMGYzYzdhNGYxYzY0NDNhNjRjJnRyYWNraW5nX2NvZGU9NWI2OWU2NTdmOTliOGQwZjNjN2E0ZjFjNjQ0M2E2NGMmcj1yZWljaGFyZHQuam9lcmclNDBnbWFpbC5jb20
* no. 10: http://email.uservoice.com/c/ZD1kNTImaT01Mzk2ZTZiMDExZWYxXzcxMmIzZmYwYTQxZTUzMTQ4MjU4YiU0MHVzZXJ2b2ljZS5jb20maD04NGVmYTc2MWZjYzFiZjY2NTFlZGRmM2FjYTNiZjU1MCZsPWh0dHAlM0ElMkYlMkZ3aW5nb2xmLnVzZXJ2b2ljZS5jb20lMkZhZG1pbiUyRnRpY2tldHMlMkYxMCUzRmVtYWlsX2xvZ2luX3Rva2VuJTNEYTFlYjdkZWMwN2FjZGUzNmJlMzU1MDhhZGU3YTdjNjElMjZ0cmFja2luZ19jb2RlJTNEZWRlOTMyYTZiZTc0ZDE5N2Y5ZmI4NmE0MmQ4NDQ0NWYmdHJhY2tpbmdfY29kZT1lZGU5MzJhNmJlNzRkMTk3ZjlmYjg2YTQyZDg0NDQ1ZiZyPXJlaWNoYXJkdC5qb2VyZyU0MGdtYWlsLmNvbQ
fixing caching issue for rails 3: undefined class/module.
adding basic activity logging using the public_activity gem.
wingolf layout: show vertical nav only when needed.

Otherwise, show the box with a width of 100%.
activities: adding jquery datatable functionality for activities#index.
fixing activities view: (1) show new entries first. (2) only visible for global admins.
fixing activity view for reference objects without routes (DagLinks, etc.).
adding some csv specs. not green, yet.
csv: fixing address list export and adding more specs.
csv: adding postal code and other columns to address list export.
bug fix: profile fields can now be edited if their type is not set.

This includes child profile field that could not be edited for a while.
Also added a feature spec for that.

Trello: https://trello.com/c/kmaRSYY6/613-fix-child-felder-werden-nicht-gespeichert.

There is no corresponding uservoice ticket. Apparently, users have not found
this issue.

This commit resolves the issue.
Cache horizontal navigation
Delete horizontal navigation cache