Using the current user and group does not make much sense.
I would have put something other than root/root like weboob/weboob,
but it only works if the user and group exists, despite them being
stored as text in the tarball.

This commit adds the necessary files to run the CI using Gitlab-CI. For
now, it checks that Weboob builds, then runs the linting script
(checking that every module as an icon and some tests + PyFlakes) and
the unittests. Most of modules unittests cannot run because there is no
backend configured.

Some changes were needed in the pre-existing scripts:
* Edit `weboob_lint` to exit with non-zero code if it finds modules
without icons or tests, so that the build could fail in such a case.
* Edit `run_tests.sh` to set correct exit code on failure and rework
generation of XUNIT output. Also added some doc about useful environment
variables. Added a way to generate an xunit output file when running modules
unittests, passing a `XUNIT_OUT` env variable to `run_tests.sh` script.
* Modification of `setup.cfg` and `run_tests` scripts to handle code
coverage generation. The matching regex in Gitlab for the total code
coverage is `TOTAL: (\d+\%\s*)$)`.

I also added a script to generate a JSON module status matrix from
modules unittests, ready to be sent to a
[Weboob-CI](https://github.com/Phyks/weboob-ci) instance.

NOTE: Required Python modules are taken from the `setup.py` script.
`.ci/requirements.txt` contains the requirements to run the unittests
and the CI, whereas `.ci/requirements_modules.txt` contains the specific
Python modules required at runtime by Weboob modules. The latter could
eventually be replaced by a proper call to `debpydep` script.

pyflakes/pep8, test name in setup.cfg, remove useless comments

Signed-off-by: juliaL03 <julia.leven@etudiant.univ-lille1.fr>

American amount to decimal conversion; PDF decompression function; regexp-based tokenizer. Part of #1641

weboob.tools.browser -> weboob.deprecated.browser
weboob.tools.parsers -> weboob.deprecated.browser.parsers
weboob.tools.mech -> weboob.deprecated.mech
weboob.browser2 -> weboob.browser
weboob.core.exceptions -> weboob.exceptions

Also, the new tree for browser2 is:

weboob.browser: import weboob.browser.browsers.* and weboob.browser.url.*
weboob.browser.browsers: all browsers (including PagesBrowser and LoginBrowser)
weboob.browser.url: the URL class
weboob.browser.profiles: all Profile classes
weboob.browser.sessions: WeboobSession and FuturesSession
weboob.browser.cookies: that's a cookies thing
weboob.browser.pages: all Page and derivated classes, and Form class
weboob.browser.exceptions: specific browser exceptions
weboob.browser.elements: AbstractElement classes, and 'method' decorator
weboob.browser.filters.*: all filters

Signed-off-by: Oleg Plakhotniuk <olegus8@gmail.com>

Signed-off-by: Oleg Plakhotniuk <olegus8@gmail.com>

closes #1412

This allows to parse PayPal balances which includes both symbol and letters, for
instance "$ 42,00 USD".
Also, it does not require adding any new symbols to the regular
expression.
It might break modules, though numerous cases were tested.

Those are non-module tests, and can be run by nosetests without a
wrapper script.