GitLab

 - Split code that lists and syncs quotas
 - Merge the latter with qh_sync_users
 - Move qh_sync_projects in quotas.py; sync only active members
 - Add missing select for update in project suspend
 - Clean up quotas.py

Available join and leave policies are internally defined and should
not be changed by settings. Move policy descriptions to presentation.py.

Do not convert to string the lookup key in templatetags/filters.py

Remove project_tests.py, empty package im.endpoints and fixtures

Implement 'join_urls' method for joining a base URL with a path,
without worrying about redundant or missing "/". Do not use
'urlparse.urljoin', since it has different semantics.

Also replace `quotas' with `quota' in strings and command line options.

To change base quota for a specified user:
  snf-manage user-modify user --set-base-quota resource limit

To import base quota in batch from a file:
  snf-manage astakos-quota --import-base-quota filename

Rename `initial' to `base quota' in command output.
Move code that creates/removes AstakosUserQuota entries in file quotas.py;
sync user to quotaholder after such a change.

Refs #3411

Refs #3530

Use the same utility function as astakos-quota. Update the latter
to a SynnefoCommand.

Refs #3717

Replace instances of DateField in ProjectMembership and
ProjectMembershipHistory.

This reverts commit 7ce770be9fd9668fff4088eff2421cbeb0cc311e.

Update astakos tests to use membership id.

Replace all AstakosCallpoint references

Refs: #3340

Fix race condition in one of Astakos tests.

Do not user 'assertItemsEqual' method of unittest is only supported in
python 2.7.

Also, some arguments have been renamed.

Search based on 'person__id' and not 'id'.

add_member, remove_member were not used.

Always return services that exist in database. If a known service exists
use the predefined presentation data as base dict upon which we build up
the returned info by merging the data stored in service model and the
ASTAKOS_SERVICE_META entry if exists for the corresponding service.

For cancel and dismiss, it is for now just a placeholder.

Form passes only a tuple (name, limit) for each selected resource,
omitting presentational data.

- Allow admin to overwrite default resources presentation data using
  ASTAKOS_RESROUCES_META setting. dict_merge is used to accomodate admin
  from declaring all available metadata parameters.
- Enforce allow_in_projects resource policy in project application
  form.

Add attribute `allow_in_projects' in Resource model (True by default).
Set this flag for astakos.pending_app to False in the description
of astakos resources.

Unify these operations when registering a pending application,
in order to make sure no commission can be left pending.

Sync number of pending applications to quotaholder.

In order to facilitate migrations.