Add sidebar

_Sidebar.md

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+# Table of Contents
+
+1. Home
+1. Project Layout
+    1. Repo. Root
+    1. Plugin Source Directory
+        1. Plugin Classes Directory
+            1. Plugin Dashboard Directory
+            1. Plugin Widgets Directory
+    1. Plugin Stylesheets Directory
+    1. Plugin Images Directory
+    1. Plugin Scripts Directory
+    1. Plugin Translations Directory
+    1. Plugin Templates Directory
+1. Git Tips
+1. Versioning
+1. SVN Release Guide
+
+## Appendices
+
+1. Custom Template Stack
+1. Customised Documentation Schema
+