Add missing labels to category filter dropdowns.

props afercia.
fixes #29921.

git-svn-id: https://develop.svn.wordpress.org/trunk@29870 602fd350-edb4-49c9-b593-d223f7449a82
Remove "View" prefix from category filter dropdowns, for consistency with [27626].

props afercia.
see #29921.

git-svn-id: https://develop.svn.wordpress.org/trunk@29871 602fd350-edb4-49c9-b593-d223f7449a82
Add missing label to comment type filter dropdown.

props afercia.
fixes #29922.

git-svn-id: https://develop.svn.wordpress.org/trunk@29872 602fd350-edb4-49c9-b593-d223f7449a82
Fix whitespace issues in [29781]. Remove a redundant comment.

props miqrogroove.
see #29557.

git-svn-id: https://develop.svn.wordpress.org/trunk@29873 602fd350-edb4-49c9-b593-d223f7449a82