Added 404 and 500 error pages to MAM, UI fixes
added 403 fobbiden page for MAM
added input validation to role name
Fixing a 404 bug
Switching to use MAM apis
Switched to email to username
fixed mam policy UI issue
Merge branch 'rc3' of github.com:WSO2Mobile/mam into rc3
View users assigned to Role (backend method)
Fixing viewing bugs
Merge branch 'rc3' of github.com:WSO2Mobile/mam into rc3