Fixed all the molecule_name unit tests.
Fixed all the residue_name and residue_number unit tests.
Removed a broken import.
Added a missing import.
Shifted the test_reverse unit test back into test_selection.py.
Import of the dummy modules into the correct location.
Removed the dummy modules.
Manually reverted r6073.
Created more dummy modules.
Added a dummy molecule module for the unit tests.