Add linked DCTL/FIDA filter, but disable for now

Until I can test it and we're sure about the fixture structure.

Disable Allocated To filter until there's a calculated case property for that.
fix Field Data Collection Activity Report issue (Case:50938, Case:51095)

FixtureDataItem.by_user() could return a couchdbkit results iterator or a list,
so do list(result) instead of result.all()
Merge pull request #8 from dimagi/mwhite

Case Report changes