ability to customize the dashboard per user

### Description

Not all links are meant for all users. It would be nice to customize the page so that certain users are able to access different links than others.

best case: create user groups with individual users and assign page configuration to each group.

Example: admin has access to all links/ pages. super user/ manager has access to a sub-set, and a regular user has even more restricted access.

A simple config where we can define pages (e.g home.yml, glance.yml) for each authenticated user - would be an excellent start:

`auth:
secret-key: # this must be set to a random value generated using the secret:make CLI command
users:
admin:
password: 123456
pages:
svilen:
password: 123456
pages: `