variant_categories can be chosen when creating a product and they are associated to master_variant; still some bugs to fix
corrected small bug; only thing missing is ordering the variant_categories
removed scope :master_variant from Variant.rb. product.master_variant returns only a record now
added file .jpeg to be used on tests; fixed all model_specs to be cover 100% of the methods/validations/relations/callbacks
corrected controller specs that were bad; fixed some bug with the creation of a product (variant :inverse_of variant_variant_category); changed how the variant_categories parents worked
Merge branch 'feature/cp-categories_in_products_second_version' into develop
Merge branch 'develop' of github.com:Plazr/plazr_store into develop
corrected small bug
added namespace to route helper: 'plazr_store.search_path'
Merge branch 'develop' of github.com:Plazr/plazr_store into develop
copied new migrations from plazr_auth
corrected small inconsistency
Merge branch 'develop' of github.com:Plazr/plazr_store into develop
migrations regarding plazr_auth
deleted plazr_auth migrations that weren't needed; changed method name in variant_spec;
Merge branch 'develop' into mockup

Conflicts:
	app/models/plazr_store/product.rb
	app/views/layouts/application.html.erb
	app/views/plazr_store/admin/multimedia/_form.html.haml
	app/views/plazr_store/admin/products/_form.html.haml
	test/dummy/spec/models/prototype_spec.rb