Adapt scheduler.py to use pycaptive.ini variable

[ivanleoncz]

Should use this variable:

PyCaptive/app/pycaptive.ini

Line 3 in 39c440c

SESSION_DURATION: 43200

And not the old app.config structure:

PyCaptive/app/modules/scheduler.py

Line 45 in 39c440c

sched.add_job(expirer, 'interval', seconds=app.config['SCHEDULER_DICT']["INTERVAL"])

[ivanleoncz]

Better wait for issue #32 resolution, before moving forward with this issue 👍 .