added input validation on new vocab title.
added input validation on new vocab title.

thecoolestguy/frontend,ilios/frontend,dartajax/frontend,gabycampagna/frontend,dartajax/frontend,gboushey/frontend,djvoa12/frontend,gboushey/frontend,stopfstedt/frontend,jrjohnson/frontend,gabycampagna/frontend,stopfstedt/frontend,jrjohnson/frontend,djvoa12/frontend,ilios/frontend,thecoolestguy/frontend