Repeating plural display function

git-svn-id: https://plugins.svn.wordpress.org/rotatingtweets/trunk@997981 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update .pot to reflect corrected file.

git-svn-id: https://plugins.svn.wordpress.org/rotatingtweets/trunk@997982 b8457f37-d9ea-0310-8a92-e5e31aec5664