etcdhttp: add PUT and DELETE on /v2/admin/members/
etcdhttp: add doc for member management http endpoint
etcdhttp: remove members handling for now
Merge pull request #1298 from jonboulle/members

etcdhttp: remove members handling for now
etcdhttp: check error returned by ParseForm
etcdserver: better logging
Merge pull request #1304 from coreos/logging

etcdserver: better logging
Merge pull request #1299 from unihorn/162

etcdhttp: add PUT and DELETE on /v2/admin/members/
raft: add RemovedNodes to SoftState
raft: add ConfChangeNil
etcdserver: add checking when apply conf change
etcdserver: rename to containsUint64
Revert "raft: add ConfChangeNil"

This reverts commit 1c934ef030e731c678d37225fbe2312cd962936f.
etcdserver: use none nodeID to indicate invalidation
etcdserver: explicit type assertion
raft: add resetPendingConf
etcdsever: refine error var message
etcdserver: update Server interface comments