Ref #81 Updates to Admin Guide
Ref #95 Documented wsrep_sync_wait
Ref #67 Updates to wsrep_evs_repl_latency.
Ref #95 Updated wsrep_sync_wait.
refs #89 - added release codename to version string
refs #100 Remember highest seen view seqno to make sure that
          install view id always increases when install message
          is regenerated. Unit test.
Merge branch '3.x' into gh71

Conflicts:
	gcomm/src/evs_proto.cpp
	gcomm/src/evs_proto.hpp