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/general/urls.html b/user_guide/general/urls.html
index 9902083..8ba46e3 100644
--- a/user_guide/general/urls.html
+++ b/user_guide/general/urls.html
@@ -145,8 +145,7 @@
·
<a href="#top">Top of Page</a> ·
<a href="../index.html">User Guide Home</a> ·
-Next Topic: <a href="controllers.html">Controllers</a>
-</p>
+Next Topic: <a href="reserved_names.html">Reserved Names</a></p>
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</div>