Removing some order dependence via beforeEach, afterEach.
Removed all order-dependence from TimeSeriesVisualizationController tests.
First step of removing order dependence from TimeSeriesVisualizationRegistry Tests.
Un-singletonizering the TimeSeriesVisualizationRegistryClass.
Updated usages of singleton to use instance.
Merge pull request #134 from cschroed-usgs/NAWQAAN-243

Nawqaan 243