Update Web UI to default to /ui/index.html for any request to /ui/. Also add in a filter for allowing any origin.

Fixed lots of compile errors in unit tests; mostly involved replacing longs with DatapathIds, byte[]s with MacAddresses and Ipv4Addresses, and shorts with OFPorts and VlanVids; some refactoring of flow mod contruction was also done to align with loxi's builders. The static flow puser now supports IP TOS for OF1.0 and for OF1.1+ it supports match/rewrite to either ECN or DSCP bits.

2 - Update module HA role change actions
3 - Add unit tests for HA role changes

module provides no services.