For version 1.59 which will be released in December 2019, we will be merging this pull request in which we will remove support for the alternative overview pages that have been available since we forked.
The flexible overview page with Widgets has been available for a number of years now and has been the default for most of that.
If you do happen to use any of the alternative overview/front pages such as:
However, we are open to feedback if you do use these and would like them converted. Please comment in this pull request with more info.