Styles for activity widget comments are incorrectly appearing on edit-comments.php

[iammattthomas]

On edit-comments.php, gravatars are displaying outside the comment list, unapproved comments are breaking the layout, and all comments have a gray background. The comment styles meant for the dashboard activity widget need the #activity-widget ID added to their selectors so they don't affect edit-comments.php.

When trashing/spamming a comment from the dashboard, the absolute positioning for gravatars needs to be overridden so gravatars don't appear outside the proper row.

[iammattthomas]

Add specificity to the DASH activity widget comment styles.

[iammattthomas]

Uploading this fix as a patch so the DASH folks can review, in case there are others that need to be fixed as well.

[nacin]

In 26175:

More specific CSS for the dashboard activity widget.

props iammattthomas.
see #26028.

[iammattthomas]

r26175 appears to have taken care of everything here.