fix some bugs in extension point javascript
fix some bugs in extension point javascript

* when something fails continue to the next item instead of returning from the
  method
* print out the error to the console if an extension point fails
* create a new div for each extension point.  We were mistakenly using the same
  div

pombredanne/moksha,pombredanne/moksha,lmacken/moksha,mokshaproject/moksha,mokshaproject/moksha,pombredanne/moksha,mokshaproject/moksha,ralphbean/moksha,lmacken/moksha,mokshaproject/moksha,lmacken/moksha,pombredanne/moksha,ralphbean/moksha,ralphbean/moksha