Inital draft of barcode data import.
Stopped tracking *.pyc files
Merge branch 'helper-functions' into barcode-import
Fixed indentation to match PEP 8
Refactored HelperFunctions.py

* removed unsed import of glob
* init_db() now populates the database
* insertSession() now takes session_types.id as the first argument
* implemented userJoinSession()
* removed loginUser() because it's out of scope for this prototype
* createUser() no longer takes passord argument
Started connecting barcode.py to the database
Implemented student list and navigation

* Added option to return to the previous menu
* Added option to quit the application
* User can now list students that are registered to attend the selected session
* Removed password field from users table (out of scope)
Implemented manual entry of attendence data
Implemented attendance data import from file
Merge branch 'barcode-import' into dev

Conflicts:
	HelperFunctions.py