Mark config panels as internal

The doc spec was failing since these classes were added with
no docs and weren't marked as internal so the coverage dropped
below 80%.

src/app/config-panel.coffee

@@ -1,6 +1,10 @@
 $ = require 'jquery'
 {View} = require 'space-pen'
 
+###
+# Internal #
+###
+
 module.exports =
 class ConfigPanel extends View
   initialize: ->

src/app/config-view.coffee

@@ -6,6 +6,10 @@ EditorConfigPanel = require 'editor-config-panel'
 ThemeConfigPanel = require 'theme-config-panel'
 PackageConfigPanel = require 'package-config-panel'
 
+###
+# Internal #
+###
+
 module.exports =
 class ConfigView extends View
   registerDeserializer(this)

src/app/editor-config-panel.coffee

@@ -1,6 +1,10 @@
 ConfigPanel = require 'config-panel'
 Editor = require 'editor'
 
+###
+# Internal #
+###
+
 module.exports =
 class EditorConfigPanel extends ConfigPanel
   @content: ->

src/app/general-config-panel.coffee

@@ -3,6 +3,10 @@ ConfigPanel = require 'config-panel'
 $ = require 'jquery'
 _ = require 'underscore'
 
+###
+# Internal #
+###
+
 module.exports =
 class GeneralConfigPanel extends ConfigPanel
   @content: ->

src/app/package-config-panel.coffee

@@ -3,6 +3,10 @@ ConfigPanel = require 'config-panel'
 $ = require 'jquery'
 _ = require 'underscore'
 
+###
+# Internal #
+###
+
 module.exports =
 class PackageConfigPanel extends ConfigPanel
   @content: ->

src/app/theme-config-panel.coffee

@@ -3,6 +3,10 @@ ConfigPanel = require 'config-panel'
 $ = require 'jquery'
 _ = require 'underscore'
 
+###
+# Internal #
+###
+
 window.jQuery = $
 require 'jqueryui-browser/ui/jquery.ui.core'
 require 'jqueryui-browser/ui/jquery.ui.widget'