[DOC] Add a space between _ and the label

Change-Id: I1ac597fc0e32f5d99e5762b68d55b2e5d8d425d0
[DOC] Using DIB for images / installation

* Docs for howto getting started with DIB
* Howto build Libra LBaaS elements using DIB

Change-Id: I776f64d11c8a75f8104208e60f13427c4f8fb5f8
[DOC] Simple docfix in development docs

Change-Id: Ifd5a2cbf6768020389a8f7a1121cbea8a067a5e1
[API] Move socket creation into libra.common.api and support not having SSL

Change-Id: I42d4f82f853d8eedccb5408e55a6924b09d04541
[API] Exception fixes

* Only pass detail=... if the exception derives from DetailError
* Change error[0] > error[1]
* Add ExhaustedError for exhausted resources

Change-Id: Idc6d1351e72068ae5313dc0f7fdbc0108d9cde13