Added very basic GUI and constraints to statsViewController
Minor change to nib
Created a cell for the children tiles.
Added ability to drag a child icon from the tray
Animates back to home when dragging has ended
Can now drag and child from the children tray and add them to the legend
All drag and drop of children and emotions are now implemented
Added popover picker for game mode and y axis data type
Merge branch 'Stats-screen' into development

Merging in my partial work to prevent a large merge conflict later on

Conflicts:
	Social Solver/Social Solver.xcodeproj/project.pbxproj
	Social Solver/Social Solver/ViewControllers/GuardianMainMenuViewController.xib
	Social Solver/Social Solver/Views/LoginUserSelectionCell.xib