Merge pull request #305 from MIT-Mobile/3.6/dev-intrepid-svoigt

3.6/dev intrepid svoigt
Fix bug in tours list `stopForIndexPath`
Toggle user tracking mode for tours map
Set selected state of list icon in iPad tours overview
Constrain tours map and list to top/bottom layout guides
Add tours info panel to map view
Present and dismiss tour details form sheet
Drop in correct assets for map and list view
Deselect tour details cell after selection
Keep map rect consistent when returning from stop details
Pass correct animation arguments in map region setup
Merge pull request #315 from MIT-Mobile/3.6/dev-intrepid-adolce

Add iPad tour info view and map improvements
Added iPad tour stop detail screen