Migrate outline-view to new extension folder layout

src/extensions/outline-view/index.coffee

@@ -1 +1 @@
-module.exports = require 'outline-view/outline-view'
+module.exports = require 'outline-view/src/outline-view'

src/extensions/outline-view/spec/outline-view-spec.coffee

@@ -1,6 +1,6 @@
 RootView = require 'root-view'
 OutlineView = require 'outline-view'
-TagGenerator = require 'outline-view/tag-generator'
+TagGenerator = require 'outline-view/src/tag-generator'
 
 describe "OutlineView", ->
   [rootView, outlineView] = []

src/extensions/outline-view/src/outline-view.coffee

@@ -1,14 +1,14 @@
 {View, $$} = require 'space-pen'
 SelectList = require 'select-list'
 Editor = require 'editor'
-TagGenerator = require 'outline-view/tag-generator'
+TagGenerator = require 'outline-view/src/tag-generator'
 
 module.exports =
 class OutlineView extends SelectList
 
   @activate: (rootView) ->
     requireStylesheet 'select-list.css'
-    requireStylesheet 'outline-view/outline-view.css'
+    requireStylesheet 'outline-view/src/outline-view.css'
     @instance = new OutlineView(rootView)
     rootView.command 'outline-view:toggle', => @instance.toggle()