Documentation: minor edits
Build System: upgraded Gradle from 1.5 to 1.8
EntityStore JClouds: upgrade jclouds dependency from 1.5.10 to 1.6.0

Switch from deprecated InputStreamMap to BlobStore API.
Build System: upgraded JodaTime from 2.2 to 2.3
Build System: upgraded ASM from 4.1 to 4.2
Build System: upgraded SDK dependencies

Upgraded all dependencies to latest versions when available.
Some were not upgraded either because they break the build or need attention.
The libraries.gradle file has comments on offending dependencies.