Add Python page

- Update styles for some includes
- Use default markdown rendering instead of span rendering to allow
  multi-line content
- Slight hack in customstyles to allow color overrides. A better fix
  would be to use the bootstrap sass to keep constant colors throughout
  the project
- Added title parameter to note and warning includes

_includes/tip.html

@@ -1 +1 @@
-<div markdown="span" class="alert alert-success" role="alert"><i class="fa fa-check-square-o"></i> <b>Tip:</b> {{include.content}}</div>
+<div markdown="1" class="alert alert-success" role="alert"><i class="fa fa-check-square-o"></i> <b>Tip:</b> {{include.content}}</div>