Merge branch 'releases/1.9.0'
Bump version for hotfix
Upgrade Spring Framework to 4.0.8 to address CVE-2014-3625
http://www.pivotal.io/security/cve-2014-3625
Merge branch 'hotfix/1.9.1' into develop

Signed-off-by: Jesse Zhang <jz@pivotallabs.com>

Conflicts:
	gradle.properties
Bump next developer version

Signed-off-by: Jesse Zhang <jz@pivotallabs.com>