Revert "Fix some zi/zo issues."

This reverts commit b39be7b367528d9a86380c3ec5c2a6fcafd2cd22.

vimperator/content/config.js

@@ -110,6 +110,8 @@ const config = { //{{{
             function () { buffer.viewSelectionSource(); }]
     ],
 
+    hasTabbrowser: true,
+
     // they are sorted by relevance, not alphabetically
     helpFiles: [
         "intro.html", "tutorial.html", "starting.html", "browsing.html",
@@ -120,6 +122,10 @@ const config = { //{{{
         "various.html", "index.html", "version.html"
     ],
 
+    optionDefaults: {
+        stal: 0,
+    },
+
     scripts: [
         "bookmarks.js",
         "tabs.js",