Introduce login feature. Using /setUser/<user>[:<login>] OR /setLogin/<login> prior to starting
the application, the <login> user will only see dashboards created by <login>. If no login is set, the
username 'base' is assumed.

In a further iteration, of the login feature, users will be able to marke
their dashboards 'private'.  All the other dashboards will be visible to allow
other users.  Users will also get the option of copying dashboards from
other 'login' users.
checkpoint working multi dashboard feature