correct fixture, else dont load
create new module : lens
add lenses models
add lens catalog list page
lens should be in admin too
should be able to add a lens when none
same menu in admin and normal site
get lens price in stat page
add lens mount in camera catalogs (WARN need an alter on camera_catalog table)
add a column for camera that are not lens exchangeable
correct FK name
correct case, dont always show sell_price
add info page for lenses
add the sell part on lenses
add methods to handle lens selling views
add templates for lens selling
add urls patterns for lens selling
add action icons for lens selling in lens info page