removing preview code we are not using and cleaning up
removed unused files
removed preview url
added crosslinks and more info to list events pages
Merge pull request #41 from Konviser/master

add functionality for changin status of event from approved to pending
using django template tags makes no sense in this case
Merge pull request #42 from ialja/master

cleaning up and adding links to list events pages
modify edit event. in case new picture is not uploaded then old one is kept
merge conflicts with local changes