Merge pull request #1 from khamkham/arne

Arne
Initial add of CrowdFlower API. Commented some of the functions in the ProcessController.
Added jstree to asset pipeline. Uploading to crowdflower is now possible, with the exception of expirationInMinutes, keywords and advanced options. platform[] is now a CrowdTask field. Small bugfixes.
fixed AMT (assignmentReviewPolicy when no gold in batch).
fixed CF error catching.
Morning 30-1
Merge branch 'master' into jelle
Merge done and templateting almost complete