Recoded the image transformations for no deformations
Changed the naming path of photos with id to deal with cachning problems. Some models improvement for people not knowing infos. Presentation improvements for money infos. Centered portrait picture rendering
Removed last references to simple json in view.py And updated the django version in requirements and added xlrd for registrations from xls files
Reverted change on models.py to operate migration first
used a makemigrations after django updtate to deal with version change and integrated south in 1.7, makes new initial migration
merged with dev