Bug: the function dropDatabaseTables does not drop the table sessions

[karliatto]

The function dropDatabaseTables does not drop the table "sessions" in "bitstarter_test" database due to the fact that it takes the name of the tables from the models and sessions table is created by session_express module.

[chill117]

Yes, you are correct. Good catch!

[chill117]

We should not drop the sessions table during the test clean-up. Instead we should empty the sessions database table. See my comments on the #93.