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since users get registered at quotaholder during the activation process
(qh_register_user_with_quotas call in `activate` method -- im/functions.py).

An additional safer check in `create_membership` method might be
necessary.

set-password & active options

At the project application detail, project administrators
(ASTAKOS_PROJECT_ADMINS setting) may approve or deny it.
A denied application is still viewable by the applicant,
until he dismisses it from the same page.

The project administrators' project list includes all projects.

This is not normally needed, since all resources circulating through
the system must be allocated from the initial reserve quantities.
However, if somehow this consistency is broken, and more quantities
are released to the reserves than have been allocated from them,
the reserves will not be able to accommodate the extra quantities.

Adding (practically infinite) capacity to reserves allows this
inconsistency to be.

astakos-load-service-resources would only load resources correctly once,
during migration. Now it can be used at will to re-initialize service
resources from astakos configuration.

Display user date_joined and is_active fields

Previous implementation of 'select_for_update' method was based on an
attribute of the 'ForUpdateManager'. However, the model manager is shared
between all threads, which lead to race conditions. This commit
reimplements 'select_for_update', by making it return a custom QuerySet
(ForUpdateQuerySet), which overrides the 'get' and 'filter' methods.

Never pass password as an 'osparam' to Ganeti. Always use the vmapi,
even for VMs created with server-create management command.

Catch correct exception

Handle exceptions in 'filter_results' (management commands helper
functions used to implement --filter-by option).

* Add details to OverLimit exception, with the values provided by
kamamaki.clients.quotaholder.exception.CommissionValueException.
* Fix DummyQuotaholder exceptions
* Fix DummyQuotaholder checks

re-raise the exception after rolling back transaction

DummyQuotaholderClient should count only positive commissions.

Since commit 482c645, a VM exists in the Cyclades DB before the
corresponding job is enqueued in the Ganeti backend. Therefore, there is
a corner case, where Cyclades can not enqueue the job to Ganeti and
Cyclades crashes before deleting the VM from the DB, which results in a
stale VM entry in a building state. This commit adds the necessary check
to guarantee that these VMs will be removed by the reconciliation
process.

Better handling of transactions when creating a server. Commit the
creation of VM in DB, before enqueuing the job to the Ganeti backend.
If communication with Ganeti fails, then the VM is deleted from the DB.
If the servers crashes before deleting the VM, the stale VM will be
removed by the reconciliation mechanism.

 * Various semantic fixes on different guides
 * Various shpinx related fixes
 * New pictures for the overall Synnefo architecture
 * Update the scaling-up section of the admin guide

Include upgrade to 0.13 helper scripts in synnefo contrib