Correct spelling of tumblr and streamline webfonts

*Corrected spelling of tumbler to tumblr
*Updated Font Awesome to version 4.0.3
*Removed Glyphicons due to duplication with Font Awesome
*Updated Font Awesome selectors to fa fa-[iconname]
*Migrated glyphicon selectors to Font Awesome selectors

This will reduce page load size due to fewer assets being loaded, and increase page speed