Add ability to sort project issues/MRs

I think we should add the ability for a user to sort issues and MRs in the project by Creation date and by Last updated date and make sorting by Creation date default like it is on Gitlab now.

On Gitlab there are few more sorting options(Priority, Milestone due date, Due date, Popularity, Label priority, Weight), but I don't know could we implement them in app now(may be there are some API issues) and do we need them all or it will be too much.

What do you think?