[IMP] website_[blog/shop/forum]: rename routes to remove 'useless' part

Url for a product become:
/shop/productname-id instead of /shop/product/productname-id

Url for a blog post become:
/blog/blogname-1/blogpost-1 instead of /blog/blogname-1/post/blogpost-1

Url for a question on forum become:
/forum/forumname-1/title-1 instead of /forum/forumname-1/question/title-1

task-2295016