added certificate validations
schema bump
added relations for cert_validations
added model validations
prevent multiple validations by same user
use spring to run guard tests
link validations to certificate
added verify route for certificates
allow user to be set
add temporary interface for validation
renamed certificate_validation to verification
tweak readme
removed spring
Merge remote-tracking branch 'origin' into community-validation

Conflicts:
	db/schema.rb
allow popovers in certificate header
changed verify to be in popover
corrected width of save and finish dialog
formatting tweak for additional-question
set line height for h3 when in a well
relate certificate with verifying users