create shareable link without sending love first.

[floriantraber]

• create shareable link without sending love first.
• improve styling: change font to helvetica, add some spacing on send love page
• add pictures to autocomplete @sjaensch

[sjaensch]

Generally looks good to me, thanks! Could you add a screenshot or two to show the updated UI?

[floriantraber]

Create a shareable link (Recipients and message are validated server-side):

Generated shareable link (If recipients or message change, the link is hidden and the button is displayed):