- Fixed unnecessary loading of jQuery for every tab even if we didn't have
  content scripts that matched
- changed some jquery.ajax calls to use standard promise fullfillments
  instead of deprecated callbacks
- made css files hot fixable too
- now showing "updating" while loading new data
- removed debugger statement
Merge pull request #5 from buck2769/cleanup

- Fixed unnecessary loading of jQuery for every tab even if we didn't ha...