Super massive docs overhaul

* Bring back the navbar up top
* Pull the docs content back into separate pages because a 6.6k line docs file is just crazy
* Recenter the page content and bring back affixed side nav (needs work)

less/navs.less

@@ -56,7 +56,7 @@
   }
 
   // Dividers (basically an hr) within the dropdown
-  .divider {
+  .nav-divider {
     .nav-divider();
   }
 }