Check the default version of python while building

if its 3.X, use python2 instead of python in executing codes
Merge pull request #363 from assem-ch/python_version_makefile

Check the default version of python while building
A better way to define different settings in prod
Merge pull request #364 from mdebbar/settings_prod

A better way to override some settings in prod
Use django's SortedDict instead of collections.OrderedDict.
Make TEMPLATE_DIRS absolute paths.
Merge pull request #365 from mdebbar/fix_for_host

Few fixes to make the code work in different environment with Python 2.6
A script to release the new version on alwaysdata.
Merge pull request #366 from mdebbar/update_script

A script to release the new version on alwaysdata.
- Added robots.txt to the files that need to be linked from public.
- Updated django.fcgi, htaccess.txt and robots.txt with the latest content.
- Raise a 404 when a user accesses an unknown URL.
Merge pull request #367 from mdebbar/robots

A few changes to finalize the new release system for AlwaysData