show multiple application periods in UI
Add fixtures for multiple application periods (yhteishaku kevät 2015)
add lock symbol
fix serializer
don't return application periods when validating
disable editing locked preferences
add skipped tests
Merge branch 'master' into feature/hakuajat
lock preferences according to the application periods they are linked to
Add consistency to test fixtures
Merge branch 'master' into feature/hakuajat

Conflicts:
	src/main/scala/fi/vm/sade/omatsivut/servlet/ApplicationsServlet.scala
	src/main/scala/fi/vm/sade/omatsivut/tarjonta/Haku.scala
Add validation for moving or adding preferences where application time has ended
Add extra hakukohde for testing
add fixture for testing freezing of the first application period
Remove debug messages
fix inactive hakutoive validator
refactor
fallback value
Add tarjonta fixtures for ‘erillishaku’
Reformat