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Move authentication mechanism to the correct place, implement a dummy
decorator, some test data etc

 * add cpu attribute returned on flavor(s) listing
 * use api 1.1redux on gui for flavors

 * implement server reboot/shutdown/start/destroy actions
 * fix ordering on imports (servers.py, actions.py)
 * actions.py: change type to reboot_type (reserverd word)
 * change vm.start_action to backend.start_action where needed
(there is no vm.start_action any more)
 * create server action function in synnefo.js

Refs #311

UMLGraph-based, check http://http://www.umlgraph.org/

VirtualMachine models has attribute backendjobstatus instead of
_backendjobstatus

This commit fixes some breakage caused by the recent merge of
the logic-refactoring branch, mainly related to db/db_controller.py.

The main reason was the different value of import path, fixed by
making sure all imports are rooted in synnefo.

All db and API tests run properly.

Conflicts:
	api/handlers.py
	api/tests.py

  * Update VirtualMachine reference in all modules
  * Updated fixtures accordingly (and tests)

Conflicts:
	README