Blacklist: Collapse 3.5 to "3.5 all versions"

This commit blacklists all 3.5-era versions from the BSA, replacing
them with the catch-all "3.5 all versions".

We're doing this now as we've reached the specified time (date of last
build + 6 months), and we now have a message in place indicating that
we don't support these builds but that other service providers may
continue to provide support.
EOL: Update EOL links to open in a new tab

For a user filling out a bug report, we don't want to interrupt their
work by jumping them to a new page (and possibly losing their entered
data), so we now open links in a new tab/new window.