Initial "cut" translating to pyramid

This is a breaking change and needs more work, which is why it is in another branch.

 * moved old app to "_lwp" for now and bring in files into new pyramid app in the "lwp" folder as needed
 * transformed into a basic pyramid app that is similar to the "starter" or "alchemy" scaffold in pyramid (PasteDeploy, with a development.ini and production.ini file)
 * setup some models, reverse engineered from the old database, with the addition of needing a primary key because they are ORM models
 * a temporary lwp_initdb script, until the Alembic migrations are setup
 * setup multiple workers using gunicorn
 * use PasteDeploy ini file inheritance, with production.ini and development.ini inheriting from the old lwp.conf configuration file which contains the user customisable settings in production.
 * setup beaker for sessions, because we are now using multiple workers, had to use disk-based sessions, so put those in /var/lwp/sessions
 * setup pyramid authentication, and setup ACL's and permissions
 * setup a view empty views that use these permissions
 * setup login and logout views, login is fully working now