Remove empty/obsolete old testcases
Test for non-existant owner, fix mock avatarholder
Parametrize room test, improve dummy_room

also get rid of class wrapping room tests
Flush DB after setting attribute value
Improve test fixtures

- add create_room_attribute
- add create_equipment_type
- add bool_flag
- improve parameters of create_location
Improve location tests
wip room tests
Add basic py.test environment and some fixtures
Add some simple example tests

Will be removed/moved away later
Move tests into a possible good structure
Add basic tests CLI manager