Revert "Merge pull request #48 from rwstephenson/master"

This reverts commit 38eeeeb679ba80c98047bc177da5b58a7129e67c, reversing
changes made to fdbb3c6c4a969ad3ac1f406d4dcd4830b5317d8e.

Conflicts:
	gradle.properties
Revert "Merge pull request #42 from rwstephenson/master"

This reverts commit 87695c44c91c6052487486ef5db39f15f742690d, reversing
changes made to 6d2e603e715f9d0992dafe5908fa584b79dc6dca.

Conflicts:
	network/src/main/scala/com/linkedin/norbert/network/netty/ChannelPool.scala
	network/src/main/scala/com/linkedin/norbert/network/netty/NettyNetworkClient.scala
	network/src/test/scala/com/linkedin/norbert/network/netty/ChannelPoolSpec.scala
Merge pull request #64 from linkedin/stats-rollback

Roll back new statistics code whic his causing memory leaks