Added REST API v1.1 section

* General info was added
* Added DataSource api description
* Added JobBinaryInternals and JobBinaries
* Jobs added
* JobExecutions added

Implements blueprint docs-03

Change-Id: I8e9112c23f7e8196e728eb8bf9617d1a699e1a59
Merge "Added REST API v1.1 section"