Cleanup; JSHint, spell checking.
Removed the Issues module test.

* The test is using real http calls, and would/could therefore randomly fail. Also adds a lot of time to the execution of the test suite.
Extracted the addCommas method.

* The addCommas method is now part of a new utils.js file, and is statically accessed from both profile and youtube modules.
Added tests for the addCommas method.
Merge pull request #78 from verath/cleanup

Cleanup and JSHint fixes