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Add independent fixtures for the Image model in db/fixtures/images.json,
no dependencies from VirtualMachine instances.

on images return progress="100" if image.state == ACTIVE, otherwise progress="0"
on servers return progress="100" if server.rsapi_state == ACTIVE, otherwise progress="0"

Add new file README.DB with instructions for PostgreSQL and MySQL setups.
Modify fixtures to include definition of Images in definition of VMs
(vms.json), ensuring referential integrity.

Remove the "user" ForeignKey() field from the SynnefoUser model, since
we do not use Django's auth mechanism.
More specifically:
    * remove user ForeignKey() field
    * update fixtures for initial data, DB and API tests
    * shorten verbose_name fields since they break with MySQL
    * fix comments, apply minor fixes to style

Try to revert the breakage caused by commits
     * dac4356407c446943ff029d1fe931516f3ba4c07
     * 27816aaeab44c059466834a556a78931e5b0a9ee
     * 3ca38a07a0d23fd9bec0c4bc423df863dcf6509c

which caused self.save() to be called in VirtualMachine.__init__()
and  broke object creation.

on machines.html

error messages (404, 400, 503, 501 or others) are translatable
The greek translation has been added

 * Simplified code in VirtualMachine._update_state()
 * Added comments in Flavor._get_costs() and other model methods

on machine's response, as it is with images

 * Rename update_state to new _update_state() method, used by the
   VirtualMachine model internally to update its state. Not to be
   called by external entities.

  * VirtualMachine model now has the update_state() method
    to set the _operstate field
  * Modified the other models to user update_state() method

add missing try except blocks on FlavorHandler, ImageHandler, ServerHandler

  * Re-implemented the tests
  * Added functionality to all charger-related functions
  * Added functionality to the charger itself

The code needs still lots of testing

changed "raise fault.itemNotFound" to "return noContent" on the few cases that it was still in use

 * remove power nap code that polls the ganeti job
 * introduce def random_password() that returns a random 8-digit password
   password comprises of upper and lower case ascii chars and numbers

 * set as vm.name the user requested name
 * send vm.backend_id to Ganeti

 * update/extend tests: testServerList, testAPIVersion, testFlavorsDetails, testImagesDetails

 * remove if rapi legacy code that was unused
 * update rackspace API specs doc link to
http://docs.rackspacecloud.com/servers/api/v1.0/cs-devguide-20110112.pdf

use variables instead of strings, for server/image/flavor ids

Make the POST /servers handler convert disk size to MB
before passing it to the RAPI call. The disk field of the Flavor
model is in GB.

The changes in d174b105e0fb3038bcf69623f3624f99f437ea3f broke the
app and the tests. The AccountingLog class had been renamed but
several references were left using the old name.

Also removed the violation attribute from fixtures since it was
removed from the model.

The api tests and most db tests now pass

 * use JSON.stringify, as in standard view
 * add start action

* Rename AccountingLog -> Debit
* FlavorCostHistory -> FlavorCost
* Tests are broken (work in progress)
* CreditAllocator is broken

and display the right values in the wizard confirmation step

For example:

 * testServersDetails that tests if the correct servers details are returned by the API
 * testWrongServer that tests if a wrong server is asked if a 404 is returned
 * testActions (reboot, shutdown, start, delete) that test if each action is run as expected

update list of acceptable statuses of a job with 'queued' and 'waiting'

Use json.loads(request.raw_post_data) instead of request.post for actions
Also create VM with name test-server if we are running unit tests
(request.META['SERVER_NAME'] == 'testserver')

Use JSON.stringify for actions (reboot,shutdown,start,destroy)