init commit of 2.4
update from trunk
Updated to version 2.5 from http://plugins.svn.wordpress.org/editorial-calendar/tags/2.5/
Merge branch '2.5'
updating to ver 2.6
add 2.7 from http://plugins.svn.wordpress.org/editorial-calendar/tags/2.7/
(history only) Merge remote-tracking branch 'origin/master'