Fix message notifications (#46)

* Fix mail notification on login

* Fix HUD notification

api.lua

@@ -99,6 +99,9 @@ function mail.send(m)
 		local name = player:get_player_name()
 		if recipients[name] then
 			minetest.chat_send_player(name, mail_alert)
+			local receiver_entry = mail.get_storage_entry(name)
+			local receiver_messages = receiver_entry.inbox
+			mail.hud_update(name, receiver_messages)
 		end
 	end
 

hud.lua

@@ -43,7 +43,7 @@ function mail.hud_update(playername, messages)
 
 	local unreadcount = 0
 	for _, message in ipairs(messages) do
-		if message.unread then
+		if not message.read then
 			unreadcount = unreadcount + 1
 		end
 	end

onjoin.lua

@@ -2,11 +2,12 @@ minetest.register_on_joinplayer(function(player)
 	minetest.after(2, function(name)
 		local entry = mail.get_storage_entry(name)
 		local messages = entry.inbox
+		mail.hud_update(name, messages)
 
 		local unreadcount = 0
 
 		for _, message in pairs(messages) do
-			if message.unread then
+			if not message.read then
 				unreadcount = unreadcount + 1
 			end
 		end