Modified logging_in method as part of current_or_guest_user
Modified logging_in method as part of current_or_guest_user

- Transfers all guest related records to the current user
- Reloads two querys: guest_user.bills and current_user.bills

codeforboston/cambridge_energy_app,codeforboston/cambridge_energy_app,codeforboston/cambridge_energy_app