Begin with validaton
Validate unique fields
Merge pull request #759 from erwinwinder/master

Added validation to forms
add catalog/study manager plugins, set menu labels
use @Bean instead of @Service to prevent collisions in LL app
uniform spacing, reduce nav margins
add ids
style changes
style changes
rename class, move to other package
introduce data transfer objects
add data model independent catalog classes
add builder that creates catalog model from catalog (and catalog selection)
move to other package
add methods to check if catalog is loaded
move to other package
move to other package, require a study definition bean
use prefix variable
rename changes
rename filter.xml to study.xml