Add no perm error and redirect after loading

This adds a no permission error with a likeliness of 20% when a MyBB
error isn't given. Also adds a 10% chance of being redirected to the
homepage a random amount of time after the page has loaded.
Bump version number up to 1.1
Merge pull request #1 from JordanMussi/master

Add no perm error and redirect after loading