changed homepage to show featured worlds.
added /admin paget to changed worlds to featured
TODO add link to /admin and set up admin accounts.
changed admin page to use a post request.

TODO create group system to authenticate admin users.
handlebars bind attribute function seems broken, at least for bools.

switched to using if/else statements.
fixed spaces in world names breaking them
Merge pull request #53 from BrianHillman/master

fix admin page, added uri encoding