Attempting to "Edit Unit" leads to Page Doesn't Exist Error

[mzagaja]

Steps to reproduce:

1. Create a new user using the regular e-mail method after entering a bill
2. Click "My Profile"
3. Next to "My Home" click the number "1"
4. Click "Edit" which leads to https://www.enersaveapp.org/units/[number]/edit
5. See the error

[CJStadler]

This seems to be a fairly complicated issue. Going to dump what I've found so far here for future reference:

1. When a guest creates a bill a unit is also created. Is this necessary? It feels like a placeholder that is going to need to be edited anyway.
2. No building is created with this unit. Should one be? It feels like a unit should require a building.
3. When the user creates an account, they inherit the unit.
4. Attempting to edit the unit causes an error because there is no associated building. Perhaps the user should not be allowed to edit the unit until they have created a building?