Previously when switching from guide tab to class tab the examples
in first tab would get set to zero height.  Now only recalculating
the heights of examples in the tab to which we switch to.

- Add missing semicolons.
- Remove commented o=ut code.

Added print-template.html which like template.html gets scanned for
CSS files which then get concatenated.

Include the ext-all-debug.js needed by inline examples.
Include bootstrap.js needed by larger examples.