Merge pull request #20 from rajreddy/webui

Following changes are done.
Adding VM information along with prouter topologyand flow trace and underlay path
Merge pull request #21 from rajreddy/more_attr

Adding VM information along with prouter topologyand flow trace and unde...
Changing the logic of getting prouter IP from ipMIB itself, in stead of consulting arp and ifTable
Merge pull request #22 from rajreddy/ipMib

Changing the logic of getting prouter IP from ipMIB itself, in stead of ...
Following items are fixed.
1) The UI displays all the VMs of the 2 vrouters in the path. Ideally, we should only display the 2 VMs that are in the path.
2) The VM display goes beyond the extreme right of the display area. We cannot easily use the links or Vms that roll of the right in this way
3) Clear highlightling elements.
4) Removing 'Reverse Map Flow' from 'Search Flows'. Can add back if required.