Add task to setup the db

Requires setting pg_hba ipv4 access to trust.
Added explicit sudo and sudo_user to setupdb tasks
Remove postgresql.conf

May restore, troubleshooting here.
Add Django settings.py template and vars
Fix sudo_user, files were owned by root
Properly create database with postgis extensions
Install settings.py and run django syncdb
Fixup - forgot to sudo
Run migrations and fix auth_permission.name col width
Remove extra line
Move cloned repo to /var/django

Should make synced folders simpler
Create user/group with known uid/gid

This way, we can set up the shared folder mount before the user exists
fixup: name not group