Burrow does not seem to pick up changes to partitions in a topic until it's restarted.

Steps:

1. clone latest burrow from github (go get)
2. Start burrow up with default configs (changed broker/zk hosts)
3. http://localhost:8000/v2/kafka/local/topic to show my test topic "test.jim1" does not appear
4. create a topic in kafka called "test.jim1" with 1 partition
5. change meta refresh interval to 30 seconds to force faster refresh of client.Topics call
6. webpage shows 1 partition
7. add partition to topic
8. describe topics on kafka shows 2 partitions, after several metadata refreshes burrow still shows 1 partition
9. on burrow restart, both partitions are now reflected.

Is this a regression or?
Figured I'd ask before digging into the code.

*updated, new topics works after the meta refresh internal, documenting partition refresh still doesn't