Enable and disable save button depending on whether asset type is defined
Fix analysis warnings
Simplify code and remove analysis warnings
Apply style on save button when button is disabled
Remove redundant specifications
Apply same style on cancel button and save button
Apply style on required multi-selection elements
Merge pull request #141 from finnishtransportagency/make-asset-type-required-property

Make asset type a required property
Merge branch 'master' of github.com:finnishtransportagency/digiroad2 into csv_user_import_with_ely_numbers