BP_2_0.2012.46_RC2
Optimized message cleanup

https://janrain.atlassian.net/browse/FED-83
BP_2_0.2012.46_RC3
set new "expire" header to only appear for v1.3 requests

https://janrain.atlassian.net/browse/FED-24
BP_2_0.2012.46_RC4
further optimization of message index purging
fixed provisioning path issue

https://janrain.atlassian.net/browse/FED-83
https://janrain.atlassian.net/browse/FED-24
BP_2_0.2012.46_RC5
Bring min Idle connections in pool to be the same as max active.  Seeing some lag when new connections are required.
BP_2_0.2012.46_RC6
Fixed bug with in-memory cache not updating properly from localStorage cache
Standardized fix to surrounding code style

FED-102
Merge pull request #18 from traney/b76b7638b20a96803d862e0faff45c471e854e79

Cache Fix
BP_2_0.2012.46_RC7
FED-74: Fix Backplane 2 grants allowed with non-existing bus

Also validate buses in grant/revoke requests.
(cherry picked from commit 17175f3dd72ba4fe23e8d1e6d4e5ea8fa073d9c3)

Conflicts:

	src/main/java/com/janrain/backplane2/server/provision/ProvisioningController2.java
	src/test/java/com/janrain/backplane2/server/provision/ProvisioningController2Test.java
FED-75: Fix Backplane 2 creates bus even while issuing bus owner error
(cherry picked from commit 67bf64c2796641a2db8d8033752690270e546aae)
FED-93: No subscribers no polling

Avoid polling the server if there are no subscribers.
(cherry picked from commit 220de2ccf7583ead0ab6e2c10e02835f923c06bd)
FED-106 Backplane2 /messages throws ParseException when no "since" paramete

Check to make sure the since parameter isn't blank -- null, empty string, or whitespace
Re-doing this commit on the prod branch per traney
FED-92: Ported https://github.com/janrain/janrain-backplane-2/commit/3871ada7516d5731fe58a46a8dc42cf4548ad3db to 2012.46_RC2.
FED-92: Ported https://github.com/janrain/janrain-backplane-2/commit/d123b821014979507c752989ade29cdf9d34db8a to 2012.46_RC2
FED-91: https://github.com/janrain/janrain-backplane-2/commit/ba2ff0906a99158d5d69b57e7dca51286d6922c2 to 2012.46_RC2
FED-103: Ported https://github.com/janrain/janrain-backplane-2/commit/145fbd318e22257f97ba4475740355b72bd2329f to 2012.46_RC2