Make Teledactyl minimally functional, albeit with quite a lot of errors on the console.

common/modules/config.jsm

@@ -151,6 +151,8 @@ var ConfigBase = Class("ConfigBase", {
         return version;
     }),
 
+    get fileExt() this.name.slice(0, -5),
+
     dtd: memoize({
         get name() config.name,
         get home() "http://dactyl.sourceforge.net/",
@@ -243,8 +245,6 @@ var ConfigBase = Class("ConfigBase", {
      */
     autocommands: {},
 
-    commandContainer: "browser-bottombox",
-
     /**
      * @property {Object} A map of :command-complete option values to completer
      *     function names.
@@ -350,6 +350,8 @@ var ConfigBase = Class("ConfigBase", {
      */
     scripts: [],
 
+    sidebars: {},
+
     /**
      * @property {string} The leaf name of any temp files created by
      *     {@link io.createTempFile}.