Refactoring import
Merge branch 'release/1.0.28' into develop
reduce url to 'a' and reduce unique token to 8 bit
Merge pull request #56 from praekelt/feature/issue-91-sms-character-length

reduce url to 'a' and reduce unique token to 8 bit
Removed mobile field, throw error on invalid class
Removed mobile from import
Merge branch 'feature/issue-30-improve-import' into develop

Conflicts:
	auth/admin.py
Fixed merge
Removed single welcome message requirement
Added filter for welcome_message
Add ability to attach new bonus point to a participant from admin
Merge pull request #58 from praekelt/feature/issue-32-welcome-sms-single-se

Feature/issue 32 welcome sms single se
bumped version number
Merge branch 'release/1.0.29'