Added validation for UserDetails object
Now keeping track of progress within Armor study.

Also some small css changes
Improved validation on user details
Addition to the FormTagLib to be able to call radioGroup from other taglibrary
Added VAS and improved practice test to Armor Study
New layout based on pure css
Improved pure CSS styling
Added support for different armor questionnaires
Implemented basic validation for questionnaires.

For now, the only validation is that all fields are required. This can be
improved later on.
Added support for initial value on a VAS scale
Improved layout and added validation to questionnaires
Update to several Armor questionnaires
Update to storing the last finished questionnaire
Implemented experience form and bugfix to yes-no tag
Merge branch 'armor' into armor-final
Updated UrlMappings so the user gets to the armor study immediately
Added configuration and administration pages for Armor study
Implemented Email and SMS functionality in Armor study