Web UI: patch 453, 615, 525, 625, 630

[ylei-tsubame]

As per request, changes are included in 1 PR.

Includes:

• 7b3e445..5d086f5 - add logging to help debug #610
• 7d6bc9a - add a button to fullscreen VNC connection; closes #453
• 4d5d698..b45f27e - show IPMI details as a part of host details; closes #615
• ba9c65a - periodically refresh anvil node components, i.e., cpu, memory, storage; related to #510
• 76703d5 - don't hide password script in fence device management; closes #525
• 9ed047d - make error message show up during test access in init. host form; closes #625
• 245e3a9 - handle server with empty server host uuid; related to #630