- fix main image problem , now GoodPicture have main_image(:thumb_style) method to get image
- it returns any image if main isn't set, return empty image if good have no images at all
Merge branch 'development' of github.com:rossmari/freshstyle into development
- fix admin good pictures edit form
fix verstka
Merge branch 'development'

* development:
  fix verstka
  - fix admin good pictures edit form
  - fix main image problem , now GoodPicture have main_image(:thumb_style) method to get image - it returns any image if main isn't set, return empty image if good have no images at all