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https://service.deployment.vendor.tld/service-base/api-prefix/hard/path
|___________________________________| |__________| |________| |_______|
             BASE_HOST                  BASE_PATH    PREFIX    Hardcoded
|_________________________________________________|
             SERVICE_BASE_URL

- Introduce <SERVICE>_BASE_URL setting, and <API>_PREFIX constants
  for all services. Extract BASE_HOST, BASE_PATH from the setting.

- Use settings and constants to construct top-level patterns
  (base-path/api-prefix) in services' urls.py

- Refactor/extend proxy() to be compatible with the above.

- Change URLs passed around (ui, e-mails) to be compatible.
  (needs more work)

Notes:

This configuration REQUIRES that any rewriting and proxying on the
front-end must eventually result in the application server (gunicorn)
getting the original path of the request, otherwise the view-generated
URLs will be different.

Changes:
- set top-level urlpatterns from <SERVICE>_BASE_URL
- rename setting: APP_INSTALL_URL to CYCLADES_BASE_URL
- rename setting: ASTAKOS_URL to ASTAKOS_BASE_URL everywhere
- introduce setting: PITHOS_BASE_URL
- update shipped .confs, quick install admin guide, upgrade guide
- fix urls/views/reverse()/other that were broken
- (more not listed)

The csrf middleware is not to be installed with cyclades,
therefore there is no need to use csrf_exempt.

Extend Network model with the 'drained' attribute, to indicate whether a
network should be used in public IP allocation when creating servers.
This option is only useful for public networks.

avoid redirecting user to the single view of the build vm

not so often, but providers do seem to change urls

Wrap all calls to astakosclient for commissions to raise 500, if any
error other than QuotaLimit(413) occurs.

removed the hardcoded mapping between cloudbar and dashboard elements

when project approval fails chain_id is set to None causing reverse to fail.
Resolved by redirecting admin user to the projects list.

early initialiaztion of variables that used only when project is available

Capitilize 'synnefo' in footer and remove space between v and version 
number in footer

redirect browser back to tha page the action called from

used to redirect user back to the referer page if it's safe and possible

Show reject/approve button in 'project pending members' page.
Remove confirm dialog when user clicks outside dialog area.
Minor style changes.

The "Plankton" name is obsolete and should not appear in the API guides.
We replace it with "Cyclades/Image" or just "Image" wherever it appears.
Also wrap the API guide to 80 chars.

This function uses the keystone alike authentication API of Astakos

* tenantName is optional in the request
* check whether the token holder is active and the token has not been
  expired
* update and fix the tests
* update the docs

Conflicts:
	snf-astakos-app/astakos/im/views/projects.py

udpated project members template to properly post selected membership ids to
the appropriate urls.

added new view to handle multiple project members actions. View accepts
multiple `members` parameters containing project membership ids.

/<chain_id>/members/remove/ -> removes project membership ids
/<chain_id>/members/accept/ -> approves posted membership ids
/<chain_id>/members/reject/ -> rejects posted membership ids

Conflicts:
	snf-astakos-app/astakos/im/templates/im/projects/intro.html
	snf-astakos-app/astakos/im/templatetags/astakos_tags.py
	snf-astakos-app/astakos/im/urls.py
	snf-astakos-app/astakos/im/views.py

The ``X-Forwarded-Host`` header should not be forwared to the target
because django appends its value to the Host header and
results in validate_host() failure.

Since the Image Service is not going to be decoupled from Cyclades
we will stop calling it with a different name because it is
frustrating for people who are trying to understand the Synnefo
architecture and the interaction between different services.

We will keep all references to "plankton" inside the code, but we
remove all references inside the documentation. From now on
"Plankton" will be just called "The Image Service" and we will note
that it is a part of Cyclades. The same already happens with
"The Network Service", which doesn't have a special name since it's
part of Cyclades too.

This patch removes all Plankton references inside the documentation,
except from those inside `docs/plankton-api-guide.rst' which will be
removed with a separate patch.