Merge remote-tracking branch 'upstream/master'

resolved conflicts with refactored structure

frontend/ui/widget/inputtext.lua

@@ -98,6 +98,10 @@ function InputText:getKeyboardDimen()
 end
 
 function InputText:addChar(char)
+	if self.enter_callback and char == '\n' then
+		UIManager:scheduleIn(0.1, function() self.enter_callback() end)
+		return
+	end
 	table.insert(self.charlist, self.charpos, char)
 	self.charpos = self.charpos + 1
 	self.text = self:CharlistToString()