With this commit, actions can have a type=fullscreen. This means that
the navbar will be hidden, for the action and for all subsequent actions
open in the breadcrumb
There is no real security behind this, this is just a feature for
convenience, so users can bookmark an url an open some action in a way
that they are not distracted by anything. In short, this is some kind of
light 'kiosk' mode.
Fixes 4 actions where a whitespace was inserted in the view_mode, resulting in
an unknown view_mode (' graph') in the view_switcher.
Also updates the doc to prevent people to think they can insert whitespaces in
the view_mode definition.
Pretty much completely rewritten theme with custom HTML translator and a
few parts of the old theme extracted to their own extensions.
Banner images thought not to be that huge after all, and not worth the
hassle of them living in a different repository.
co-authored with @stefanorigano
gilvanleal