Renamed for clarification

LoginAccount    - > User
FinanceAccount -> Account
Moved reports to sub package

Since there are going to be a fair number of them.
Added a getter for deposit source
Created income source report
Made spending category report use dates correctly

Also added indentation to the multi-line display.
Made users serializable through SerializableData
Made accounts serializable with SerializableData
Fixed account balance display

Previously it would display as - ($100.00), now correctly displays as
just - $100.00.
Added support User/Account serialization in SQL