add picture model and associations, update seed
update mongoid assoc singular, update seed file
update statics#landing change @tshirt_feature to to @tshirt, add @front and @back, update view, change image file name in assets
remove old tshirt image file names
add tshirt model instance methods size front and back
add placeholder picture image_name
show random tshirt on feature page
update tshirt back model to show back"
add placeholder image for tshirts without pictures
tshirt index show image and tshirt info
update tshirt index styling
update seed, provide placeholder image
add placeholder image