Revise all redirect functionality and standardize internal implementation

[aamplugin]

AAM comes with multiple ways to redirect user. Today you can define redirects like:

• Login Redirect
• Logout Redirect
• Access Denied Redirect
• Content is restricted redirect
• URL is restricted redirect
• 404 Redirect

Internal implementation is required to be refactored to streamline support for all these redirects in one cohesive way. This is important to standardize access policies.