Align versions in pom with other versions used by OSG.
Bump versions in pom in preparation of a new pre-release.
Scrub 'argus' from the various names and attributes; this is in
preparation for also allowing VOMS to provide banned users.
Make user banning work more intuitively.

Changes made:
1) Multiple banned groups now function.
2) Any BannedUserGroup instance is automatically added to the banned list.
3) All UserGroup instances now have a special code path for matching only
   on DNs; this is because it makes little sense to also match on FQAN
   for the purpose of banning.
Fix a class cast exception which prevented banned groups from being
updated at a rate independent from the rest of the user groups.
Automatically create a default banned group which the new user
banning page will be able to use without mucking with pre-existing
groups.
Automatically add several groups to the ban list:
- Any group of type BannedUserGroup.
- Any group the admin specifically lists.
- GUMS's default manual ban group.
Bugfix - make sure the manual user group works correctly when used
on a ban list.  Make sure that the DNs are quoted appropriately to
be used as regular expressions.
Convert some interfaces to use generics.
Add webapp support for managing ban lists.