Add one new field needQualification to service model. Add QualifedTrainee
and Overseer many to many relationship to service model
Add related name
solving the circular importing models from accounts app, remove the overseer in the service model
remove two unecessary methods and minor chagens in comments
minor changes
resolved merge conflicts and cleaned up a bit. will do more later.
Merge pull request #84 from attendanceproject/services

changes to services model merged into test-ss