Added a Reserved Names page to the userguide, and migrated reserved controller names into it.
Added a Common Functions page to the userguide for globally available functions.
diff --git a/user_guide/nav/nav.js b/user_guide/nav/nav.js
index 8899280..e824299 100644
--- a/user_guide/nav/nav.js
+++ b/user_guide/nav/nav.js
@@ -42,6 +42,7 @@
'<ul>' +
'<li><a href="'+base+'general/index.html">Getting Started</a></li>' +
'<li><a href="'+base+'general/urls.html">CodeIgniter URLs</a></li>' +
+ '<li><a href="'+base+'general/reserved_names.html">Reserved Names</a></li>' +
'<li><a href="'+base+'general/controllers.html">Controllers</a></li>' +
'<li><a href="'+base+'general/views.html">Views</a></li>' +
'<li><a href="'+base+'general/models.html">Models</a></li>' +
@@ -52,6 +53,7 @@
'<li><a href="'+base+'general/core_classes.html">Creating Core Classes</a></li>' +
'<li><a href="'+base+'general/hooks.html">Hooks - Extending the Core</a></li>' +
'<li><a href="'+base+'general/autoloader.html">Auto-loading Resources</a></li>' +
+ '<li><a href="'+base+'general/common_functions.html">Common Functions</a></li>' +
'<li><a href="'+base+'general/scaffolding.html">Scaffolding</a></li>' +
'<li><a href="'+base+'general/routing.html">URI Routing</a></li>' +
'<li><a href="'+base+'general/errors.html">Error Handling</a></li>' +