The script was relying on the presence of an environment variable, which
is only set when the virtualenv is activated. But a virtualenv does not
have to be activated to work (it's possible to call the python command
directly).
This fixes it by relying on `sys.executable` which should be correct at
all times.
Fixes#306
* Add a command to generate configuration examples
Config files are generated from templates (which remplace previous example files).
- solve the issue of hard-to-explain configuration examples
- ease pkg path seeking (avoid it, actually)
- add working defaults for sqlite and unix socket paths (instead of
/replace/me/path/example)
- move settings comments from default_settings.py to ihatemoney.cfg.j2, as it is
the one that will be facing user.
* Use generate-config command in install doc
Also follow the new working defaults of templates for socket and db path.
* Fix doc settings table
On the long term, plaintext tables might destroy humanity.
* Mention templates dir URL in documentation
As requested by @almet
* Use absolute imports and rename package to ihatemoney
* Add a ihatemoney command
* Factorize application creation logic
* Refactor the tests
* Update the wsgi.py module with the new create_app() function
* Fix some styling thanks to Flake8.
* Automate Flake8 check in the CI.
