added width / height attributes to img tags
added ability to cache static content in the browser
removed unused function leadingZeroFor
loading small gravatar images now server side and caching the results
Merge commit 'dcbdf86a65f4f812c7932622e35ce669ae1e9160'
delete file that is not needed
Merge pull request #733 from leider/master

loading small gravatar images now server side and caching the results