List only the first couple of Dependency/Required-By entries, hide the rest.
Summary
If a package has more than ~20 dependencies/required-bys then show only those and hide the rest behind a button that expands/hides the rest.
Description
Currently all dependencies and required-bys are listed on a package's detail page. For some packages this is a very long list and requires the user to scroll very far down the page just to get to the comments.
Compare the archweb page for mesa to the aurweb page for mesa-git:
archweb lists only the first 20 entries and the remaining ones can be seen by clicking the 'show more...' link while aurweb lists all 999 required-bys in full.