use base class for repositories and inherit
Merge branch 'master' of https://github.com/sunniejai/black-sesame
fix repository base and change all repositories to use base class
Merge branch 'master' of https://github.com/sunniejai/black-sesame
use repo base for sermons repository
Merge branch 'master' of https://github.com/sunniejai/black-sesame

Conflicts:
	app/server/repositories/events.js
	app/server/repositories/sermons.js
Merge branch 'master' of https://github.com/sunniejai/black-sesame