Added new block to templates.
Added german translation for reject reasons.
Minor correction for swedish statuses.
Readapted the function to send mail to vendor.
Now a modal box pops-up asking for attachment, consequently
the structure of the function changed allowing now to send within
the ajax request an attachment.
Created a small function for successful ajax.
When we get a successfull callback after sending mail to
vendor this function is called hiding the modal box first and
displaying an alert box after informing about the successful.