MP: Make it easy for users and vendors to link to markets and items

[DrDBanner]

Users and vendors are at the moment not able to share links that open a certain view/listing/item on click.

This actively prevents them from communicating properly about and with Particl Marketplace. Hence it reduces the ability to point to the marketplace itself.

https://github.com/electron/electron/blob/master/docs/api/protocol.md may be something of interest to make this work.