Re-work the side panel/global todos

[chrhoh]

We recently had some discussions with our users and several people mentioned that they would like to have a global todo list, but can't really work with the list provided in the sidebar. Their point of view is that there is too much in there by default and a lack of filtering/sorting options (particularly when using the team setting).

Personally, I do not really have a good idea how to re-work the global todo list, except adding filter and sort options (thus I am starting a discussion, not a feature request). Given that I am primarily someone who manages instances of eLabFTW, but not a user, I’d be interested if other people have some ideas and whether there may be changes to this part of the software already planned for future versions.