GUI -- Re-instated Packet / Optical Layer filters.
- Adding ONOS instance fly-in pane. Note: still WIP.
- refactored onos.ui.addFloatingPanel to allow TL vs. TR.
- added instance pane to topo view.
- implemented addInstance() event.
- refactored event tracing.
- added instances test scenario.

Change-Id: I58d9769afa8aee9079ec778496cbc47bef329608
21 files changed