update templates to use template.openshift.io/expose-uri

Change DC strategy from Rolling to Recreate for DB templates

Recreate strategy will allow the redeployment process to stay within
1Gi memory limit instead of requiring more memory due to extra pod
is created for Rolling strategy.

Signed-off-by: Vu Dinh <vdinh@redhat.com>

Warn about database and tests

add service catalog metadata to templates

Allow database service names to contain dashes.

Fixes #77

updating db dc

updating to use secrets

fix invalid key names

switch wsgi_application value to wsgi.application

fix some incorrect description

moving wsgi file and updating settings.py to work with updates to s2i-python-container changes

Moving credentials into secrets

move allowed hosts to settings.py

add allowed_hosts env var for django

Updates template display name, tags, description, message, and grouping

group services in quickstarts

Updated django-debug-toolbar to 1.5 to fix

TypeError at /
process() missing 1 required positional argument: 'stream'

Related to https://github.com/jazzband/django-debug-toolbar/issues/856

Adds Django/PostgreSQL template with persistent storage.

bump to latest imagestream versions

enable whitenoise compression #3

Put Whitenoise back in settings.py

Add PIP_INDEX_URL option and fix required parameter issue

The new PIP_INDEX_URL parameter is added to allow custom PyPi mirror
URL to be used during the build process.

There are several paramaters that are required but didn't listed as
requested (*). Now, they are marked as required to be explicit.

Signed-off-by: Vu Dinh <vdinh@redhat.com>

Fix Django version incompatible for Python 3.3

docs: update python 33 to python 35

find_spec isn't available in Python 3.3; it was added in Python 3.4.

The current required Django version is 1.9.5 which doesn't support
Python 3.3 which causes the Python 3.3 deployment to fail while
using django-ex git repo.

The Django version is modified to use 1.8.x only to include Python
3.3 support.

Signed-off-by: Vu Dinh <vdinh@redhat.com>