Issue report: search function not working for private lists

There are several issues that prevent the correct installation of search functions for private lists:
- it is only possible to define a single archive search server in pgweb's settings.py, which makes it impossible to
defineboth a public and a private archives server,
 
- there does not seem to be any kind of permissions verifications in pgweb/search/views.py that would allow only users
subscribedto a list to search into it.
 

I've been told that this functionality did not indeed work for postresql.org's private lists.
-- 
Célestin Matte