Use a more readable textdomain. Improve wording of the intervals

git-svn-id: http://plugins.svn.wordpress.org/automatic-post-scheduler/trunk@851262 b8457f37-d9ea-0310-8a92-e5e31aec5664
Revert last commit

git-svn-id: http://plugins.svn.wordpress.org/automatic-post-scheduler/trunk@851304 b8457f37-d9ea-0310-8a92-e5e31aec5664
Poof
Merge branch 'master' of github.com:kasparsd/automatic-post-scheduler