Incremental updates

Signed-off-by: Marcel Oomens <Marcel.Oomens@cromido.org>
Scaffolding AJAX nugget

- AJAX/JSON endpoints
- Javascript

Signed-off-by: Marcel Oomens <Marcel.Oomens@cromido.org>
Refactoring templates

- Modular approach to <head>

Signed-off-by: Marcel Oomens <Marcel.Oomens@cromido.org>