Change default issues/PRs sort to "Recently updated" #80

The Newest sort option in the issue tracker is rarely useful and not at all what I expect as the default sort. I want to see where the activity is. That's likely what needs my attention most. An update to an old issue and the addition of a new issue should have the same weight. Otherwise, old issues with recent activity stay buried.

I propose modifying the URL of the main Issues tab so the issues are sorted by Recently updated (in descending order) instead of Newest. That can be accomplished by adding the following query string:

?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc