Merge pull request #113 from Rob--W/patch-1

Changed "pdf2js" label to "PDF.js".
mentor searching should use "is not empty" instead of "mentor contains @"
Fixes #85
Merge pull request #115 from max-li/mentorqueries

mentor searching should use "is not empty" instead of "mentor contains @...
Only decrement pending requests on non-cached requests
Merge pull request #116 from max-li/updaterequests

Only decrement pending requests on non-cached requests
Add Loop::Client to Firefox
Merge pull request #117 from mnoorenberghe/loop_hello

Add Loop::Client to Firefox
Adding Interest Dashboard component.