begin implementing get methods
Refactor into package com.InstantFeedback.Lecturer
Refactor, DatabaseHandler is API
Create public method to access the courses stored on the lecturer's device
Create classes Course, Lecture, Question, Answer that enable editing
Create public getters for lists of courses, lectures, questions and answers
Add rank storage to relevant classes
Refactor and add deleteAnswer
Add deleteCourse, deleteLecture and deleteQuestion
Merge branch 'database'

Conflicts:
	Lectures+ Lecturer/src/com/InstantFeedback/Lecturer/DatabaseHandler.java
	Lectures+ Lecturer/src/com/InstantFeedback/Lecturer/DatabaseHelper.java
	Lectures+ Lecturer/src/com/InstantFeedback/Lecturer/DatabaseManager.java
merge database
Make sure all methods in DatabaseManager call getWritableDatabase when necessary
Correct the rank increment
Correct rank decrement
Merge branch 'database'