[ENH] RegForm Angular: field delete confirmation
[ENH] RegForm Angular: section delete confirmation
[IMP] RegForm: Accomodation offset dates config
[FIX] RegForm Angular: rendering bugs in Firefox
[FIX] RegForm: Social events table config

* Missing cancel/uncancel event icon
[IMP] RegForm: Validation in edit mode
[MIN] RegForm: style tweaks
[REF] RegForm: Moved form tag inside angular

* Also, added validationStarted flag
[FIX] RegForm: new fields set to mandatory
[MIN] Angular: cleanup validation flag on close
[FIX] RegForm: Radio field default value
[ENH] RegForm: added validation in display mode
[IMP] RegForm: validation for email field
[FIX] RegForm: radio field renders with wrong id