Optimise repo_connect by skipping authenticate_user
The authentication being handled by pyramid itself, going through the
authentication stack to recreate the temporary session at each request is very
costly.
On my desktop, for a mostly static front page, the total time for delivering
the page drops from 100ms to 47ms.
include *.txt *.ini *.cfg *.rst
recursive-include sampleapp *.ico *.png *.css *.gif *.jpg *.pt *.txt *.mak *.mako *.js *.html *.xml