Added service bus management API

Added support for list blobs delimiter (for easier hierarchical listings)
Fixes for bugs:
 #90  get_blob_metadata returns more than the metadata (also get_container_metadata and get_queue_metadata)
 #87  Proxy support for *NIX systems
 #86  Fix capitalization in the 'Fingerprint' tag for XML of serialization of SSH keys configuration
 #83  Fixed an issue that prevented the creation of endpoints for a VM
 #80  Error deserializing datetime value from Table Store
 #79  Specify VirtualNetworkName when creating Virtual Machine
Cleanup of imports
Renamed some private functions that weren't starting with an underscore
Removed code generator (it's now obsolete, we make changes directly in the Python sources)