Re-direct user to dashboard after logging in from frontpage

[bajiat]

When the user registers or logs into Apinf, the user is directed back to landing page after pressing Sign In or Sign Up. To get into dashboard, user needs to press "Go to dashboard" button. This is an unnecessary step from the user point of view. So the user should be re-directed to dashboard instead of landing page.

If the user is not authorized to go to dashboard, they should be directed to sign-in or sign-up view.

Definition of done

• Determine the specific situation(s), where user should be re-directed to /dashboard.
• Determine the situations, when the user should be re-directed to a page other than dashboard, e.g. page when managing APIs and their session expires.
• Construct a function to re-direct user to dashboard only when it is desirable, e.g. from landing page.
• Add the function to the specific routes.

[bajiat]

@elnzv Can you take this task as well?