Alex Remo

Results 4 issues of Alex Remo

Added App Permissions and enhanced new attribute that combines Roles and Scopes altogether. ToDoList Service Api was refactored for best practices Readme file was updated as well.

## Purpose Switched TodoListServer/Startup.cs to validate tenants trying to access the Web API

don't review

Addressing #597 Added a note to create a database prior to running SQL cache command

added valid issuers to help using v2.0 token