fix: set publish as display

Tried to go back in the history to see when this field disappeared but
could not see anything. Do you think it could be related to the switch
from prometheus, @Herkarl? Anyway, no it is being set explicitly on a
post to `admin/edit`.

Resolves #40

src/main/java/se/datasektionen/calypso/controllers/admin/EditController.java

@@ -73,14 +73,22 @@ public String editForm(@RequestParam(name = "id") Long id, Model model) {
 	}
 
 	@PostMapping("/admin/edit")
-	public String doEdit(@RequestParam(required = false) String publish, @Valid Item item, BindingResult bindingResult, Model model) {
+	public String doEdit(Authentication auth, @RequestParam(required = false) String publish, @Valid Item item, BindingResult bindingResult, Model model) {
 		model.addAttribute("now", LocalDateTime.now().format(formatter));
 		model.addAttribute("formatter", formatter);
 
 		// Check for form errors
 		if (bindingResult.hasErrors())
 			return "edit";
 
+
+		if (item.getPublishAs() != null && !item.getPublishAs().isEmpty()) {
+			var mandates = ((DAuthUserDetails) auth.getPrincipal()).getMandates();
+			String mandateDisplay = mandates.get(item.getPublishAs());
+			if (mandateDisplay != null)
+				item.setPublishAsDisplay(mandateDisplay);
+		}
+
 		// If the special publish param (name of a submit button) is present, we publish
 		if (publish != null)
 			item.setPublishDate(LocalDateTime.now());