Some bug fixes and adjustments.
[Important] A minor security bug has been fixed. (Thanks, Finlay!)
[Important] The submission edit page should no longer crash.
[Important] Maximum submission size has been increased from 2.5 MB to 10.0 MB. Will monitor AWS S3 hosting costs and site performance after this change.
Fixed some typos and added to the rules of the site.
More changes to follow.