Second Listview for TodoLists in drawer
TodoList class, and adapter implementation to view in Drawer, button to add todolists from drawer
Javadoc on TodoList, and Task, some code cleanup
General javadoc for activities and models
Login styling
Added custom app icon, and refactored TodoList and task handling out of MainActivity
Exception for selecting list that does not exist in list of lists
Merge branch 'feature/addListsToDrawer' into develop
Merge branch 'develop' of https://github.com/villepetersson/DAT255-Grupp12 into develop

Conflicts:
	Android/DAT255Grupp12Project/DAT255Grupp12/src/main/java/se/dat255/grupp12/MainActivity.java
	Android/DAT255Grupp12Project/DAT255Grupp12/src/main/java/se/dat255/grupp12/Task.java
Merge branch 'develop' of https://github.com/villepetersson/DAT255-Grupp12 into develop