Short circuit shard highlighting when there are no shards on node
Fix Shard Relocating UI

When instances of shards are relocating the index shard reports its status
as green, make sure we verify there are no relocating shards before we
assume all is well.
Recovery time is not updated in real time
Show details on shards during reallocation and recovery

This resolves #2
Merge branch 'master' into gh-pages