Fix LOOT scrolling to first plugin card on init

Some of this fix is in iron-list's merged
fix-resize-external-scroll-target branch.

LOOT's JS code changes prevent changing game from not updating the
plugin cards after changing game until the window is resized.

src/gui/html/js/events.js

@@ -41,10 +41,6 @@ function onChangeGame(evt) {
     const gameInfo = JSON.parse(result, loot.Plugin.fromJson);
     loot.game = new loot.Game(gameInfo, loot.l10n);
 
-    /* Reset virtual list positions. */
-    document.getElementById('cardsNav').scrollToIndex(0);
-    document.getElementById('pluginCardList').scrollToIndex(0);
-
     /* Now update virtual lists. */
     filterPluginData(loot.game.plugins, loot.filters);
 

src/gui/html/js/helpers.js

@@ -54,6 +54,7 @@ function filterPluginData(plugins, filters) {
       }
     }
     document.getElementById('cardsNav').notifyResize();
+    document.getElementById('pluginCardList').notifyResize();
 
     /* Now perform search again. If there is no current search, this won't
        do anything. */