Testing with tablet client

[fetmar]

General debugging and testing

• [x] use correct cleaned variable for revs
• [x] combine ids in revs request correctly
• [x] use correct JSON headers in couch.js
• [x] not operation on fetch filtering
• [x] remove couch response simplification. need all rev info.

[fetmar]

Fixed with bb10ed7c5bb2c49c108715c63ee54c8bd5ed4257