add Django develop to testsuite

also fix a small issue with easy-thumbnails 1.0.3 and django 1.3

.travis.yml

@@ -5,9 +5,10 @@ python:
 install:
   - ./.travis_setup
 env:
-  - DJANGO_VERSION=1.3.1
-  - DJANGO_VERSION=1.4
+  - DJANGO="django>=1.3,<1.4"
+  - DJANGO="django>=1.4,<1.5"
+  - DJANGO="-e git+git://github.com/django/django.git#egg=Django"
 script: python setup.py test
 matrix:
   allow_failures:
-    - env: DJANGO_VERSION=1.4
+    - env: DJANGO="-e git+git://github.com/django/django.git#egg=Django"

.travis_setup

@@ -1,2 +1,2 @@
 #!/bin/bash
-pip install Django==$DJANGO_VERSION PIL django-staticfiles
+pip install $DJANGO PIL

runtests.sh

@@ -46,10 +46,13 @@ esac
 find . -name '*.pyc' -delete
 
 if [ $django == "13" ]; then
-    export DJANGO_VERSION="1.3.1"
+    export DJANGO="django>=1.3,<1.4"
 fi
 if [ $django == "14" ]; then
-    export DJANGO_VERSION="1.4"
+    export DJANGO="django>=1.4,<1.5"
+fi
+if [ $django == "dev" ]; then
+    export DJANGO="-e git+git://github.com/django/django.git#egg=Django"
 fi
 
 ./.travis_setup

test_settings.py

@@ -25,3 +25,5 @@
 MEDIA_ROOT = os.path.abspath( os.path.join(TMP_ROOT, 'media') )
 MEDIA_URL = '/media/'
 STATIC_URL = '/static/'
+
+USE_TZ = False  # because of a bug in easy-thumbnails 1.0.3