Fixes #5 IE incompatibilities

* 'default' is a reserwed keyword in switch/case. Most other browsers
  seem to accept it in other contexts
* IE does not like trailing commas
Do not UTF-8 encode the field defs JSON

Strings with non ascii characters are incorrectly decoded on Javascript
side if the JSON is UTF-8 encoded
Also remove utf8 encoding from bb_config json
Add user real name in BB_CONFIG