Clear leading spaces in products description

This was becoming code when demarkdowned.

Signed-off-by: Zeljko <zeljko@zwr.fi>
Category json builder

This motherfucker that took my afternoon away generates
recursively category and subcategories as one json using
only one jbuilder template.

Note that file: named attribute, opposed to the positional
one, will not like other variables to be passed directly as
hashed attributes, but will require locals explicit hash
single argument. That did the trick, and prevented second
file.

Signed-off-by: Zeljko <zeljko@zwr.fi>