Certification approval.
Merge branch 'certs_skills_stuff' of github.com:C4TK-MOD/master-of-disaster into certs_skills_stuff

Conflicts:
	app/models/user.rb
	db/development.sqlite3
Changing "Destroy" to "Remove" on pending certifications.
Adding Plivo notification of approved certification. Maybe.
Fixed certifcations route overwite and merged in latest changes from remote.