- added to the class `ISqlDatabaseBackend` the ability to delete a sql table
- also added `SshAccessedMysqlDb`: an implementation of `ISqlDatabaseBackend` that implements the sql database as a remote sql database accessed using ssh
- added unit tests to validate the backends SshAccessedMysqlDb and SqliteDb
work related to [https://bugzilla.ipr.univ-rennes.fr/show_bug.cgi?id=3958]
- all styling errors are now fixed, but there are still warnings and information
- most functions have been converted to snake case
- most functions now have type hinting
work related to [https://bugzilla.ipr.univ-rennes.fr/show_bug.cgi?id=3873]
- this bug was found when working on Bug 3575 - la page physix status renvoit internal server error
- in order to ease the detection of such regressions, added a unittest that covers this code
Guillaume Raffy