Sidebar access from other hooks
This is not obvious but in Ruby you can add sidebar to pages, which do not have the one, using something like:
<% content_for(:sidebar) do %> ... <% end %>
Of course, this can’t be done in the Hooks Manager using HTML! At least for now...
But maybe we can implement this somehow? For example:
Another option is to support this in the templating language (see #2209).