dummy implementation of application preview
fetch application for preview
use scalatags to generate preview
wip on application preview
implementing preview for questions
Merge branch 'master' into feature/preview

Conflicts:
	src/main/webapp/translations/fi.json
support titledgroup, checkbox
wip on application preview: grade grid support
update todos
add missing localization
add lessfile for preview
extract some common styles for preview
wip on preview style
format grade grid
Add support for date question
wip on preference table preview
format preferences on preview
update todos
more semantic html
add some tests for generated preview