Move crowdtruth/crowdflower and crowdtruth/mturk to independent packages
Add counters collection for autoincrementable ID's
Add new classes for Counters
Use Counters for Activity and Entity id generation
Starting updates on TextController for handling different type of separators
Minor changes to handle multiple separators
Merge branch 'cmartinez' into dev

Conflicts:
	app/models/FileUpload.php