Fix tabs in PortDownReconcilation and Test

Fix for static flows pusher

Static Flow Pusher optimizations and PacketOut buffer ID fixes

Also fixed an issue in Static Flow Pusher that would leave an orphaned flow if a static flow changed it's DPID.

FLOODLIGHT-30 - When deleting all entries put in by the static flow pusher for a specific switch or all switches   use a single delete based on matching the static flow pusher cookie instead of deleting each   flow individually.   Note: this means that flows mods are no longer hashed to have unique cookies.

Port Down Reconciliation

Merge into master from pull request #1946: openflowj: enforce buffer_id XOR payload for PacketOut (https://github.com/bigswitch/bigswitchcontroller/pull/1946)

Fixes for Floodlight-11 and Floodlight-13

FLOODLIGHT-13 -     Event history size is now configurable via net.floodlightcontroller.linkdiscovery.internal.LinkDiscoveryManager.eventhistorysize = <int> in the properties file. FLOODLIGHT-11 -     The log message for received LLDPs that we did not send out has been updated.

subtree update

FLOODLIGHT-28 - Change the LearningSwitch FlowMod/PacketOut buffer ID logic. We now send FlowMods with BUFFER_ID_NONE and then PacketOut the packet with the buffer ID. - Add LearningSwitch properties file options to change hard/soft flow timeouts as well as priority. - Add a learningswitch.properties file.

Add more error checking into the links identified on ports.  Classify any ports with inconsistent links seen as broadcast domain ports.

Merge into master from pull request #1930: More resilient OF message handling with role changes. (https://github.com/bigswitch/bigswitchcontroller/pull/1930)

* Only dispatch OF messages to listeners if the switch is in the active
  switch map (and is in MASTER role and connected).
  Fixes BSC-2829
* When transitioning to MASTER: notify IHAListeners of role-change
  before starting dispatching messages. When transitioning to SLAVE:
  stop dispatching before notifying IHAListeners.
  Fixes BSC-2407

Fixes for subtree update

Fix tab in LinkDiscoveryManager; fix duplicate getInetAddress() after merge in IOFSwitch and test/../OFMessageDamperMockSwitch

subtree update

Fix Conflicts:
	src/main/java/net/floodlightcontroller/core/internal/OFSwitchImpl.java

adding getInetAddress() as a function for IOFSwitch

Various UI fixes and improvements

When injecting fake ARP: set sender IP to 0 (ARP probe)
Remove weird IP learning on DHCP-replies:
	WILL BREAK DHCP MANAGER WITH RELAYS

It now defers loading any data until the UI has been drawn, avoiding a blank
screen. Now the dashboard is drawn (~1s) and then filled in with data. The
remaining bottleneck is probably the number of XHRs; concatenating JS and
templates and fetching switch data in bulk instead of individually would
reduce the number of XHRs dramatically.