nsqadmin: change tombstone direct link to form post on node page
nsqd: fix race when get/set client metadata (test flakiness)
Merge pull request #309 from mreiferson/nsqadmin_node_del_bug_309

nsqadmin: topic-delete bug
Merge pull request #311 from mreiferson/client_metadata_race_311

nsqd: race when get/set client metadata