* Remove dependency on less-plugin-clean-css which distribution
  packages are broken on debian stretch and derivated.
* Updated documentation.
* Lessc provides a `--compress` argument that could solve this issue.
  According to the documentation at http://lesscss.org/usage/: "[...]
  Compress using less built-in compression. This does an okay job but
  does not utilise all the tricks of dedicated css compression[...]"
  However, using this argument works on lessc 2.5.3 but not on 1.4.2
  (`--compress` arg is present but seems to be break some rules
  i haven't been able to put my finger on).
* Finally, use the minification of the StylesheetAsset that takes care
  of removing the spaces, the comments and the sourcemap with regexes.

fixes issue #9113

this avoid to overwrite the configuration file at each update.

closes  #11722

This is now the 2d stupidest commit I ever did

GTFO

In installation script or documentation

Fixes #10052

because it's available in debian stable but not in ubuntu 14.04 (lts)

Fixes remaining occurences of 8.0 in the windows installer. Mainly, odoo is now
correctly installed in odoo.9.0-timestamp/ instead of odoo.8.0-timestamp/

The stdlib version of the json library is more recent than the 3.5.3
version we are pinning in `requirements.txt`

There is no reason to use it.

Closes #6940

The `unittest2` package is simply a backport of `unittest` from the
Standard Library of Python 2.7 to previous versions.

There is no reason to use it any longer.

Closes #6941

rev eba1133d updated to 10.0.

99% of the contributors have signed the CLA
The rest of them have been contacted by email
and are free to either sign the CLA or ask
for their contributions to be removed from
Odoo Community Edition.

See also:
- https://www.odoo.com/cla
- https://www.odoo.com/blog/odoo-news-5/post/adapting-our-open-source-license-245

Fixes #7951

easy_install suds-jurko result in "The required version of setuptools
(>=1.4) is not available," in the last CentOS. As we don't want to
force the upgrade of setuptools, use the suds package instead.

Also, add it in centos test environment (missing after
rev 6dfbca2b)

This reverts commit 5bbcc14d and allow
to use the pil from debian's "python-pil" by telling pip to not install
the dependencies

PIL is no more en pypi. Use the external provider.

Workarounded https://launchpad.net/debian/+source/openssl/1.0.1j-1 by updating
requests in requirements.txt and pip in our tests environment.

It was preventing postgresql to generate a working cluster.

It was preventing postgresql to generate a working cluster.

It was preventing postgresql to generate a working cluster.

This library is a SOAP client. It will be used to integrate Odoo with
external web services that use SOAP based protocols.

Wkhtmltopdf has moved from Sourceforge to download.gna.org.
See https://groups.google.com/forum/#!msg/wkhtmltopdf-general/wZwTUol3mXI/GNVeyrKDdqIJ

Fixes #7574
Closes #7578

- Preserved explicit 3rd-party copyright notices
- Explicit boilerplate should not be necessary - copyright law applies
  automatically in all countries thanks to Berne Convention + WTO rules,
  and a reference to the applicable license is clear enough.

Update to pip v6 necessary to avoid import error of 'IncompleteRead' from requests.compat

Creation of a Dockerfile for the src package for nightly tests.
Remove unnecessary libraries installation from the Debian Dockerfile.

Catch shutil.Error thrown when addons have already been moved to
openerp/addons. Fixes the bug introduced by commit 91026647.

This prevents to put postgresql-9.3.5-1-windows.exe, node.exe and
wkhtmltopdf.exe in the tar.gz produced with debhelper, saving
approx. 60MB.

This fixes the privacy-breach-google-adsense lintian error for Debian
packaging.

RPM packages did not pass the tests because the centos prompt changed
and thus did not match the regexp anymore. We now explicitely specify
the prompt in our Dockerfiles to prevent such issues.