* Add a `make update-translations` command
To collect new strings to be translated from code.
Totally cheated on @Glandos commands :-)
Ref #336
Ref https://github.com/spiral-project/ihatemoney/issues/336#issue-322069517
* Document translation process
Fix#336
* Drop noisy location comments from .po files
Fix#339
* Drop .pot header
As it serves no purpose with our translation workflow.
.po header could be removed also, but pybabel has no option for that.
Ref #339
* 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.
