do nil check on max and min date
converted storyboard to XCode Version 5
turned off auto layout
moved all views in the main scene 20 px down to not overlap with status bar
made the status bar non-overlapping in the settings screen
made the status bar non-overlapping in the add new bill screen
Merge branch 'master' of github.com:knlr/EnergyBillCalculator
updated screen shots