V2.21 - We added functionality for disable rewriting templates after plugin update. Activation of radio button or checkbox by clicking on its label. Add checking installed wordpress version. We updated all functionality for wordpress 3.7.1.

git-svn-id: https://plugins.svn.wordpress.org/portfolio/trunk@801122 b8457f37-d9ea-0310-8a92-e5e31aec5664