First step in a much-needed refactor of graph javascript components
Graph implementations have been renamed
Added getters and enablers for the rest of the Node Action buttons, even if they'd be used or not
Improved graph load and loadOneHop.  Uniform messages in status bar.
Improved Pivot/Unpivot behavior
Minor fixes to Expand behavior and applying filter settings
Delete javascript that was refactored elsewhere
Missed one status feedback line