fix: handle the "+" correctly in the new poll form

gui/forms/CandidatesTree.gd

@@ -54,7 +54,6 @@ func append_item_invitation():
 
 
 func prune_empty_items():
-#	var items_to_prune = Array()
 	for item in __get_children_items(get_root()):
 		if item.get_text(TEXT_COLUMN) == '':
 			if item.get_next():
@@ -63,6 +62,13 @@ func prune_empty_items():
 			item.free()
 
 
+func prune_extra_items():
+	for item in __get_children_items(get_root()):
+		if item.get_text(TEXT_COLUMN) == invite_text:
+			if item.get_next():
+				item.free()
+
+
 func __on_item_edited():
 	append_item_invitation()
 	
@@ -83,6 +89,8 @@ func __on_item_moved(item, to_item, section):
 	new_item.set_editable(TEXT_COLUMN, true)
 	new_item.select(TEXT_COLUMN)
 	item.free()
+	prune_extra_items()
+	append_item_invitation()
 	ensure_cursor_is_visible()
 
 

gui/forms/NewPollForm.gd

@@ -27,7 +27,9 @@ func collect_poll_from_form(form:Control) -> MajorityJudgmentPoll:
 	var candidates_tree = form.find_node("CandidatesTree", true, false)
 	var candidate_item = candidates_tree.get_root().get_children()
 	while (candidate_item):
-		poll.add_candidate(MajorityJudgmentCandidate.make(candidate_item.get_text(0)))
+		var candidate_identifier = candidate_item.get_text(candidates_tree.TEXT_COLUMN)
+		if candidate_identifier != candidates_tree.invite_text:
+			poll.add_candidate(MajorityJudgmentCandidate.make(candidate_identifier))
 		candidate_item = candidate_item.get_next()
 	
 	poll.set_grading(MajorityJudgmentGrading.make_quality_6())