Deleted the abstract class

Summary :
Included the abstract class in the Controller.

TestPlan :
NA

Reviewers :
admin

Reported-By :
Swathi V

SignedOff-By :
Swathi V (swatzdev@gmail.com)
Modified DAOs

Summary :
DAOs User Session and Questions modified.

TestPlan :
NA

Reviewers :
admin

Reported-By :
Swathi V

SignedOff-By :
Swathi V
Merge branch 'master' of https://github.com/SwathiMystery/AskMe