Removed tracking of the system db files.
Cleaned up gitignore.
Can now create a new Mark in the database.
Added in the marks part.
Can now create a new Staff in database.
Changes because Assessment already has auto-increment.
Formatting change.
Chuck in a todo for an issue to be looked at later.
Can now create a new SubAssessment.
Makes constructors for insert operations through an exception as requested by Tim.
Formatting change.
Forgot to specify that the constructor needs to decalre exception throwing as well.
Formatting change.
Can now create a new Unit.