Updated $wpdb->prepare so that it no longer throws an error when trying to add videos
Minor styling tweaks to the sidebar menu title and lesson number to lock down the spacing between h2's and h6's.
Minor styling tweaks to the video tabs and downloads

git-svn-id: https://plugins.svn.wordpress.org/membership-simplified-for-oap-members-only/trunk@760960 b8457f37-d9ea-0310-8a92-e5e31aec5664