Bug fix and improvements

Pull in new floodlight/floodlight-webui code

Archipelagos

Changed DeviceResource to return a JSON object instead of returning a list.

Many REST ingest schemes (e.g. Graylog "JSON path from HTTP") expect servers to return well-formed JSON objects.  Floodlight is sometimes returning values that lack root objects.

Was:
   [ <list-of-device-objects>]

Now:
   { 'devices' : <list-of-device-objects> }

Add ability to permit all origins when using REST API

Add default of FALSE to allowing all origins in cross-domain requests. Remove old CORS code that was commented out.

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

Update to a new web user interface

Java 8

Update travis-ci to test against oraclejdk8. openjdk8 is not supported yet, apparently (but should still work w/Floodlight).

Updated to Java 8, junit-4.12, easymock-3.4. Still having trouble having unit tests pass in Eclipse for DeviceManagerImplTest, but they work find in maven and ant. testPacketInBasic and testPacketInBasicIPv6 are the trouble makers (fail occasionally).

Improve in_port match and output action handling in Static Flow Pusher

Update MatchUtils and ActionUtils to fully support parsing 32-bit signed and unsigned port numbers in hex and decimal from strings. Also improved and added more keywords for ingress and output ports to support local, table, normal, controller, in_port, all, and flood without care for the openflow version.

Remove Forwarding's stale flows upon port/link failures

Handle link and port down events in Forwarding. Remove flows ingress and egress a failed port or link to eliminate stale entries. This is done in Forwarding instead of the Link Discovery Manager, since some user modules might not want their flows removed and wish for them to persist until the link comes back up.

Do not send LLDP if we're in SLAVE role

Need to check for empty Optional instead of null

Oh, Brocade...

keystore path doesn't matter if we're using vanilla HTTP

Add link speed to statistics module's link utilization tracking