Fix wrong API method names

Closes #8828.

src/webui/www/private/scripts/mocha-init.js

@@ -633,7 +633,7 @@ initializeWindows = function() {
         });
     });
 
-    ['decrease_prio', 'increase_prio', 'top_prio', 'bottom_prio'].each(function(item) {
+    ['decreasePrio', 'increasePrio', 'topPrio', 'bottomPrio'].each(function(item) {
         addClickEvent(item, function(e) {
             new Event(e).stop();
             setPriorityFN(item);

src/webui/www/private/transferlist.html

@@ -43,16 +43,16 @@
                 renameFN();
             },
             prioTop: function(element, ref) {
-                setPriorityFN('top_prio');
+                setPriorityFN('topPrio');
             },
             prioUp: function(element, ref) {
-                setPriorityFN('increase_prio');
+                setPriorityFN('increasePrio');
             },
             prioDown: function(element, ref) {
-                setPriorityFN('decrease_prio');
+                setPriorityFN('decreasePrio');
             },
             prioBottom: function(element, ref) {
-                setPriorityFN('bottom_prio');
+                setPriorityFN('bottomPrio');
             },
 
             DownloadLimit: function(element, ref) {