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Incorporate accept/reject functions in resolve_pending_commissions,
in order to enforce a total ordering on locking holdings.
Add a wrapper (resolve_pending_commission) that operates on a single
serial.

No more needed, since quotaholder is integrated in astakos.

The quotaholder has been integrated in snf-astakos-app package.

move astakos.im.synnefo_settings to astakos.synnefo_settings and make
the appropriate changes in setup.py

Conflicts:
	snf-astakos-app/astakos/im/api/service.py
	snf-quotaholder-app/quotaholder_django/quotaholder_app/callpoint.py

Conflicts:
	docs/older/Changelog.pithos-app
	snf-astakos-app/astakos/im/api/__init__.py
	snf-pithos-app/pithos/api/util.py

Conflicts:
	snf-astakos-app/astakos/im/messages.py

use the new synnefo.user method `get_username` to populate
personal/shared images.

An unevaluated query ends up being used as an argument of intended list
type to another query, which fails in the case of an EmptyQuerySet, which
is not iterable.

kvm-vif-bridge is provided by snf-network. Remove it from the synnefo
repo to avoid confusion.

Prefetch all holdings required for update with a specified order
(by entity/resource pair).

Refs #3560

landing instead of user profile

Refs: #3519

Stamp Database Revision section

Refs: #3554

Refs: #3561

Since v0.13, all Synnefo components will have the same version and the
same Changelog, NEWS, Upgrade, Copyright file. This patch addresses
old Changelog, NEWS and Upgrade files:

 * Move all separate Changelog files under docs/older/
 * Move all separate Upgrade files under docs/older/
 * Add skeleton for the new, single, unified Changelog file
 * Add skeleton for the new, single, unified NEWS file

Copyright files will follow with a separate patch.

Refs: #3561