Added: in mem DB functionality.
Fixed: truncation test with MiniNode.
Fixed: bug with not setting file size in TFChunk, adjusted error check when completing scavenged chunk and cached in memory.
Changed: small performance and GC-pressure fixes.
Fixed: bug with infinite recursion when trying to recreate perfcounters.
Set read batch size for CatchUp Subscriptions

Enables setting of an already existing option. Helps for known
unreliable nodes like EC2 micro.
Merge pull request #68 from dward90/dev

Set read batch size for CatchUp Subscriptions
Added: node priority.
Added: admin page on external HTTP interface.
Enable Cluster Node to work easily without Manager

- Replace --manager-ip and --manager-port options with --gossip-seed
  <endpoint> (can be used multiple times to specify other nodes in a
  cluster. This can also be used to point to a manager if you are running
  one.

- Remove Fake DNS, replace with --use-dns-discovery (on by default), can
  be disabled via config or on the command line with --use-dns-discovery-.

  This means that the gossip seeds are used rather than a DNS lookup for
  other cluster nodes.

Allow specification of JSON config per ProgramBase

- Change defaults of "config.json" to "clusternode-config.json",
  "singlenode-config.json", "manager-config.json" and
  "testclient-config.json".

- Add default "manager-config.json" which disables DNS discovery
  (desirable for local testing)

Change MinFlushDelayMs to TimeSpan
Merge branch 'without-manager' into dev

Conflicts:
	src/EventStore/EventStore.ClusterNode/ClusterNodeOptions.cs
	src/EventStore/EventStore.Core.Tests/Services/ElectionsService/ClusterSettingsFactory.cs
	src/EventStore/EventStore.Core/Cluster/Settings/ClusterVNodeSettings.cs
	src/EventStore/EventStore.Core/ClusterVNode.cs
	src/EventStore/EventStore.Core/Services/Gossip/NodeGossipService.cs