Fixed prob with theme preview (right-click w/open in new tab option wasn't working), human-readable property added to new template language and component type enums & used on theme pages, unnecessary requiredWeblogPermissionActions() overrides removed, unused ThemeEditSharedThemesOnly.jsp deleted, DB migration script updated to accommodate new user.account.email.activation roller_properties constant.

git-svn-id: https://svn.apache.org/repos/asf/roller/trunk@1614967 13f79535-47bb-0310-9956-ffa450edef68