Optimized the specs for VisualizationController
Optimized the specs for VisualizationController

Each of the table tests set up quite a lot of data and had a lot of
single specs for each thing that should be tested. By moving the testing
into a singe it-block per method, the time for running rake spec was
reduced by 40 seconds.

digilys/digilys,digilys/digilys,digilys/digilys