Old model wasn't getting cleared out before loading the new one in load_location_file
updating redis session timeout to 24 hours
floating point values need to be given as x.x else json fails to load
fixed minor issues with location files so they load
also added test_loc_files.py to check if all files load
Added a json error message response to the exception handlers for the common create and update functions.
Added a json error message response to the exception handlers for the Model create and update functions.
In-progress development of Web API model stepping
in-progress development of Model step api.
Added unit tests for RandomMover
(in-progress) added unit tests for the Random Vertical Mover
some fixes to the RandomVerticalMover tests.
(in-progress) adding tests for CatsMover
Development of the CatsMover object API