FIX: prevents google to track certain pages (#7455)

app/assets/javascripts/discourse/initializers/page-tracking.js.es6

@@ -24,6 +24,8 @@ export default {
     // if it is present
     if (typeof window._gaq !== "undefined") {
       appEvents.on("page:changed", data => {
+        if (!this._shouldTrack(data.currentRouteName)) return;
+
         window._gaq.push(["_set", "title", data.title]);
         window._gaq.push(["_trackPageview", data.url]);
       });
@@ -33,13 +35,33 @@ export default {
     // Also use Universal Analytics if it is present
     if (typeof window.ga !== "undefined") {
       appEvents.on("page:changed", data => {
+        if (!this._shouldTrack(data.currentRouteName)) return;
+
         window.ga("send", "pageview", { page: data.url, title: data.title });
       });
     }
 
     // And Google Tag Manager too
     if (typeof window.dataLayer !== "undefined") {
-      appEvents.on("page:changed", googleTagManagerPageChanged);
+      appEvents.on("page:changed", data => {
+        if (!this._shouldTrack(data.currentRouteName)) return;
+
+        googleTagManagerPageChanged(data);
+      });
     }
+  },
+
+  _shouldTrack(routeName) {
+    const excludedRoutes = [
+      "adminSiteText.index",
+      "adminSiteText.edit",
+      "adminSiteSettingsCategory"
+    ];
+
+    if (excludedRoutes.includes(routeName)) {
+      return false;
+    }
+
+    return true;
   }
 };