Merge pull request #118 from ksurya/design-1.0

ENH: Updated design
Move version specification inside scipy_central
Add a setup.py and corresponding MANIFEST.in
Add tox.ini for running tests with Tox
Add more things to .gitignore
Enable using also Whoosh for searching + move __init__.py out from project root directory (it shouldn't be a Python package)
Set up a default for development DB in settings.py
Add a quickstart script and advertise it
Add Mercurial to prerequisites
README: update git url
README: simpler xapian-haystack install instructions
Fix activate script path in quickstart.py
Merge pull request #119 from pv/quickstart

ENH: Add an easy way to quickstart the development environment
ENH: showing tags for submission in item.html