Closes #8821

All files put offline - there were a bunch of imports, such as
bootstrap, google fonts, etc. All these resources were put offline so
that no internet will be needed to render the templates.
I’ve also added another theme called Deepblue. It was coppied from
Emerald from webdetails. I’ve changed some stuff. But it’s missing some
css for Analyzer, at least - don’t use this theme.