* Check voucher count input field before generating
* changed voucher-bulk-codes-num to numeric type
* Added Jan Felix to AUTHORS
* replaced alert by validation colors
* added another formatting reset
...so that it does not stay red if someone submits something valid
* Allow rich text in product descriptions
#51
* Allow rich text in category descriptions, update requirements to support fix.
#51
* Change line break (aesthetic only)
#51
* Add markdown to requirements. Update authors file
