Changing UserRole to UserRoleJoin

Beware, this breaks the view for some reason
Renamed UserRoles to UserRole Joins, Needed ID column in user_role_joins table
Update Ability to get user roles, not role
Make it possible to limit roles by date
Use `self.table_name = ` instead of set_table_name to avoid deprecation warning
Store role_id as an integer instead of a string
Make the title of user roles tab
Give better names to columns, add last name col
Fix setting default log action
Initial stab at check-in feature
Finished Checkin/out feature for now

-Checkin/out api methods can be used while signed in
-Added checkout button in Netzke App, which also signs out in addition to checking out.
Remove puts
Merge pull request #18 from spacemunkay/denney-check-in

Denney check in
Merge pull request #15 from spacemunkay/denney-add-users-roles

Changing UserRole to UserRoleJoin
Measurements will be in inches for the time being
Bug in user_stats queries
Merge branch 'master' into denney-new-user-form

Conflicts:
	db/schema.rb