Return the default 'stal' value for Vimperator and Xulmus to 0.

common/content/tabs.js

@@ -116,7 +116,7 @@ function Tabs() //{{{
 
     options.add(["showtabline", "stal"],
         "Control when to show the tab bar of opened web pages",
-        "number", config.optionDefaults['stal'],
+        "number", config.optionDefaults["showtabline"],
         {
             setter: function (value)
             {

vimperator/content/config.js

@@ -123,7 +123,7 @@ const config = { //{{{
     ],
 
     optionDefaults: {
-        stal: 0,
+        showtabline: 2,
     },
 
     scripts: [

xulmus/content/config.js

@@ -160,7 +160,7 @@ const config = { //{{{
     ],
 
     optionDefaults: {
-        stal: 0,
+        showtabline: 2,
     },
 
     scripts: [
@@ -486,9 +486,6 @@ const config = { //{{{
         ////////////////////// OPTIONS /////////////////////////////////////////////////
         /////////////////////////////////////////////////////////////////////////////{{{
 
-        let stal = options.get("showtabline");
-        stal.value = stal.defaultValue = 2;
-
         options.add(["online"],
             "Set the 'work offline' option",
             "boolean", true,