Modify Extensions::renderWidgetHolder method to render the widget data inside the placeholder and the additional html after it, but still inside the section tag.

So we can make widget areas in templates by calling them with the twig widget function, like: {{ widget( 'frontend', 'top_left' ) }}
We can define an extension's output to widget area like: $this->addWidget( 'frontend', 'top_left', 'widget', $additionalhtml, 3600 );
Expand tabs to spaces for better formatting.
Merge branch 'master' of github.com:bolt/bolt
Removed floating from imageholder in mobile style to fix positioning & sizing bug on mobile devices.
Merge remote-tracking branch 'upstream/master'
Can ignore certain URLs in the sitemap
Remove the cache header from sitemap, like it's removed from all other requests
Merge pull request #451 from ntomka/master

Widget areas in templates
Merge pull request #463 from rihards/master

Removed floating from .imageholder in mobile media query to fix positioning & sizing bug on certain mobile devices.
Merge pull request #469 from richardhinkamp/sitemap-ignore

Can ignore certain URLs in the sitemap