Bunch of UI changes that mostly affect forms

Added labels to some args form implementations, changed Post Vote's
choices to TextListArg
Untracked files that should be ignored
Merge branch 'master' of https://github.com/democsys/votevenue

Conflicts:
	VoteVenue/war/WEB-INF/appengine-generated/datastore-indexes-auto.xml
	VoteVenue/war/WEB-INF/appengine-generated/local_db.bin