End of sprint updates. Dropdown menu and all problem types
Updated for start of sprint 3
Updated Sprint 3 backlog
Deleted stuff
Fixed pendulum activity and main layout. Works in my eclipse now
Removed .idea and .settings folder from physicssolver2
Merge https://github.com/sstupka/SoftEng-Project into tmp

Conflicts:
	PhysicsSolver2/res/layout/activity_main.xml
	PhysicsSolver2/res/layout/activity_pendulum.xml

Fixed conflicts.
Merge pull request #10 from novellus/tmp

Tmp