Remove the copyright setting from settings.yml and put it in the layout directly, since it needs to contain HTML (a link to the license)

src/Settings.hs

@@ -59,8 +59,6 @@ data AppSettings = AppSettings
     -- ^ Perform no stylesheet/script combining
 
     -- Example app-specific configuration values.
-    , appCopyright              :: Text
-    -- ^ Copyright text to appear in the footer of the page
     , appAnalytics              :: Maybe Text
     -- ^ Google Analytics code
 
@@ -91,7 +89,6 @@ instance FromJSON AppSettings where
         appMutableStatic          <- o .:? "mutable-static"   .!= defaultDev
         appSkipCombining          <- o .:? "skip-combining"   .!= defaultDev
 
-        appCopyright              <- o .:  "copyright"
         appAnalytics              <- o .:? "analytics"
 
         -- This code enables MySQL's strict mode, without which MySQL will truncate data.