Generate an install script page that requests system setting changes

[Jako]

Feature request

Summary

During the install a page should be shown, that that requests system setting changes (if they don't contain the default values).

Why is it needed?

Most of the system settings are not updated during a MODX update, which is good in most circumstances. But sometimes a change of a setting would be nice, but a change would create some BC. Here the user should be requested, wether the change should be done or not.

Suggested solution(s)

• show the preferred value for a to be changed system setting and the current value
• show some text, why it is preferred
• allow the user to accept the change, edit the change or deny the change to the preferred value

Related issue(s)/PR(s)

Examples for wanted user input: #13423, #14356, #14328

This request could be a solution for #13425