Remove callbacks from Contact
Make update_primary_contact_field moethod in ContactCreator usable again
Rename Gaku::ContactCreator to Gaku::ContactCreation

A verb-noun is bad naming convention BTW
Clean up
Add ContactUpdation service
Merge branch 'staging' into refactoring-contact

Conflicts:
	sample/lib/shared_sample_data.rb
[admin] Refactor types and methods views
[admin] Refactor grading views
[admin] Refactor users and roles views
[admin] Refactor simple_grade_types and badge_types views
[admin] Refactor specialties views
[admin] Refactor departments views
[admin] Fix simple_grade_types_routing spec
[admin] Refactor presets view
[admin] Basic schools views refactoring
[admin] Fix routing specs
fix along the guard rule
[admin] Fix controller specs
[admin] Fix schools/programs feature spec
[travis] Add postgre 9.3 as addon