Added edit rating feature in WP-admin
Replaced storing username with user id
Refactored star rating html generation
Added WP filter for custom rating form validation
Some CSS changes
Improved usability of WP-admin tables

git-svn-id: https://plugins.svn.wordpress.org/multi-rating/trunk@1005594 b8457f37-d9ea-0310-8a92-e5e31aec5664