Progress: continuing development, database work, use c_base_return on more classes...

Progress: continuing development, database work, use c_base_return on more classes, and fix inconsistencies

Further work on building the database structure.

Added some missing roles:
- Requester
- Editor

A number of inconsistencies have been identified and resolved.

After reviewing my use of c_base_cookie as extending the class c_base_return, I have decided that to do that everywhere possible.
This simplifies the return structure that I complicated when I decided to use the c_base_return return type development design.

I noticed that there is still some cookie functionality that I could implement.
This adds support for 'same site' and 'host only'.
These are functionally equivalent except that I think 'same site' is a little more granular.

This also adds one of my test scripts under examples.
It is very likely not completely up to date with the database changes.

Many other changes.