update requirements to match production

[btbonval]

This is the production system's pip freeze on Heroku:

Django==1.5.8
Fabric==1.5.3
South==0.8.4
amqp==1.0.13
amqplib==1.0.2
anyjson==0.3.3
beautifulsoup4==4.3.2
billiard==2.7.3.34
boto==2.28.0
celery==3.0.24
cffi==0.8.2
cryptography==0.4
cssmin==0.1.4
distribute==0.6.36
dj-database-url==0.3.0
dj-static==0.0.5
django-ajax-selects==1.3.4
django-ajax-selects-cascade==0.1.0
django-allauth==0.16.1
django-appconf==0.6
django-celery==3.0.21
django-compressor==1.2
django-filepicker==0.1.5
django-grappelli==2.4.8
django-reversion==1.8.0
django-sslify==0.2.3
django-storages==1.1.4
django-taggit==0.12
ecdsa==0.11
filemagic==1.6
gdshortener==0.0.2
google-api-python-client==1.0
gunicorn==18.0
html2text==3.200.3
httplib2==0.9
indextank==1.0.7
kombu==2.5.16
mock==1.0.1
newrelic==2.18.1.15
oauth2client==1.0
oauthlib==0.6.1
paramiko==1.14.0
psycopg2==2.5.3
pyOpenSSL==0.14
pycparser==2.10
pycrypto==2.6.1
pylibmc==1.3.0
pystache==0.5.4
pyth==0.5.6
python-dateutil==2.2
python-gflags==2.0
python-openid==2.2.5
python-twitter==1.3.1
pytz==2014.3
querystring-parser==1.2.0
requests==2.3.0
requests-oauthlib==0.4.0
simplejson==3.5.0
six==1.6.1
static==1.0.2
urllib3==1.5
wsgiref==0.1.2

[btbonval]

one system has gunicorn==18.0 installed and another has gunicorn==0.14.3 installed. Is 18.0 somehow equivalent as 0.18, or 0.14.3 equivalent to 14.3? Need to look that one up.

[btbonval]

one system has static==1.0.2 installed and another has static3==0.5.1. Figure out which one is more recent.

[btbonval]

On PYPI, newest gunicorn version is 19.2.1. So 18.0 is probably the most relevant version number to use in this case.

Looks like static3 is a fork of static which supports Python 3. So that's probably the "newer" version, and it probably subsumes the wsgiref package which is missing on the system with static3 installed.