Item9999: fixes for topic and phonenumber formfields

- don't boing if topic value isn't defined
- removed console.log msg from js code
- improved jquery validation rule for phone numbers



git-svn-id: http://svn.foswiki.org/trunk/MoreFormfieldsContrib@17293 0b4bb1d4-4e5a-0410-9cc4-b2b747904278