Add defaultTheme config option

src/routes/preferences.nim

@@ -33,7 +33,7 @@ proc createPrefRouter*(cfg: Config) =
 
     post "/resetprefs":
       var prefs = cookiePrefs()
-      resetPrefs(prefs, cfg.hostname)
+      resetPrefs(prefs, cfg)
       savePrefs()
       redirect($(parseUri("/settings") ? filterParams(request.params)))
 

src/routes/router_utils.nim

@@ -2,7 +2,7 @@ import ../utils, ../prefs
 export utils, prefs
 
 template cookiePrefs*(): untyped {.dirty.} =
-  getPrefs(request.cookies.getOrDefault("preferences"), cfg.hostname)
+  getPrefs(request.cookies.getOrDefault("preferences"), cfg)
 
 template getPath*(): untyped {.dirty.} =
   $(parseUri(request.path) ? filterParams(request.params))