GPII-221: Renamed parent directories from 'DiscoveryTool' to 'ExplorationTool'.
GPII-221: Renamed files within the src directory from 'DiscoveryTool' to 'ExplorationTool'
GPII-221: Renamed references from within markup and scripts from 'DiscoveryTool' to 'ExplorationTool'.
GPII-221: Renamed references to 'DiscoveryTool' to 'ExplorationTool' within the markup and scripts.
Merge remote-tracking branch 'jhung/GPII-221-try2'

* jhung/GPII-221-try2:
  GPII-221: Renamed references to 'DiscoveryTool' to 'ExplorationTool' within the markup and scripts.
  GPII-221: Renamed references from within markup and scripts from 'DiscoveryTool' to 'ExplorationTool'.
  GPII-221: Renamed files within the src directory from 'DiscoveryTool' to 'ExplorationTool'
  GPII-221: Renamed parent directories from 'DiscoveryTool' to 'ExplorationTool'.