[FLOW3-general] Add support for multiple independent users

[Christoph Groß]

Hi,

last summer a wrote an application to manage the sale of drinks in my living-community. It can handle multiple residents, products purchases, the bank account, payments by residents and monthly statements. The student home I live in has multiple living communities of about 18 people. Currently the software supports only one community. I now want to extend the software so each community can manage it's own sale of drinks. 

What would be the best solution to achieve this?

Should I add a community property to all models and modify my repository queries accordingly?

Would it be easier and nicer to do it somehow with AOP?

Or can this be realized with the Security-Framework?

I just want to have multiple instances of my software (for each community one) without having multiple flow3-installations.

Kind Regards,
Chris

I shared my application on github: https://github.com/cgrossde/CGROSS.Drinkaccounting
Advice on coding style is greatly appreciated.