More language and grammar fixes (x2)

git-svn-id: https://plugins.svn.wordpress.org/mass-advertising/trunk@1001854 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fixed some commas and signs

git-svn-id: https://plugins.svn.wordpress.org/mass-advertising/trunk@1001855 b8457f37-d9ea-0310-8a92-e5e31aec5664