Lots of small changes:

- userId and uploaded (datetime) added as fields in pksudb.files in database
- outcommentated string versions of ExecuteQuery and fixed the few places that were still using it
- added a bit more safety in EditUserBool and EditUserString
- changed look of group/index to be more in line with rest of site
- sorted items in group/index and group/viewgroup alphabetically when applicable
Merge branch 'master-dev' of https://github.com/foxhide/PKSU-Gruppearbejde into master-dev