Rename one of the PositionView test classes to avoid shadowing
Rename one of the PositionView test classes to avoid shadowing

The tests in test_positions.py weren't being run, because the name
of the class clashed with that in test_views.py - this commit renames
the latter class so that the tests in both classes are now run.

patricmutwiri/pombola,hzj123/56th,mysociety/pombola,ken-muturi/pombola,hzj123/56th,ken-muturi/pombola,patricmutwiri/pombola,geoffkilpin/pombola,mysociety/pombola,hzj123/56th,ken-muturi/pombola,hzj123/56th,patricmutwiri/pombola,patricmutwiri/pombola,geoffkilpin/pombola,hzj123/56th,ken-muturi/pombola,mysociety/pombola,patricmutwiri/pombola,mysociety/pombola,patricmutwiri/pombola,ken-muturi/pombola,geoffkilpin/pombola,hzj123/56th,geoffkilpin/pombola,geoffkilpin/pombola,mysociety/pombola,ken-muturi/pombola,mysociety/pombola,geoffkilpin/pombola