(refactor) Clean up ab_test folder
add testing for queries
(test) add additional testing for ab_test queries and add image test route
(feat) deviceDoughnut directive, (test) initial deviceDoughnut test complete
(Debug) Fix rebase conflicts
(Debug) Fix variable name inconsistency
Merge pull request #122 from armandopmj/feat/ABtestingRouts

(test) add additional testing for ab_test queries and add image test route
(cleanup) Cleanup the db connection require code
Merge pull request #123 from nrobeR/master

(cleanup) Cleanup the db connection require code
(fix) Fix splash page errors
(refactor) Remove gulp test
Merge pull request #124 from darabun/master

(fix) Fix splash page errors
(feat) update clientDoughnut and clickTimeSeries directives, (test) add basic tests for clientDoughnut and clickTimeSeries; not yet functioning
(feat) Set up directory for deployment
Merge pull request #126 from darabun/feat/deployment

(feat) Set up directory for deployment
(fix) Fix error-handling bugs in server controllers
(test) Add ui.router module
(fix) api/campaign/recent serves most recent campaigns
(feat) campaign-page state can be navigated to
(feat) campaign-page.ab_test nested view