permit inline comment and ScreenLayout of Nextion

two minor improvements

- ScreenLayout in Nextion section can use hexadecimal (0xXXXXX),
  octal (0XXXX) and decimal value
- in-line comment enabled

	example:
	# conventional comment, the line starts with #
	[Section]
	Key=value # this is new style comment
	Key="quoted value # this is not comment"
	Key="quoted value" # this is prohibited (not comment)

Conf.cpp

@@ -390,6 +390,9 @@ bool CConf::read()
   if (len > 1U && *value == '"' && value[len - 1U] == '"') {
 	  value[len - 1U] = '\0';
 	  value++;
+  } else {
+	  // if value is not quoted, remove after # (to make comment)
+	  strtok(value, "#");
   }
 
   if (section == SECTION_GENERAL) {
@@ -916,7 +919,7 @@ bool CConf::read()
 		else if (::strcmp(key, "IdleBrightness") == 0)
 			m_nextionIdleBrightness = (unsigned int)::atoi(value);
 		else if (::strcmp(key, "ScreenLayout") == 0)
-			m_nextionScreenLayout = (unsigned int)::atoi(value);
+			m_nextionScreenLayout = (unsigned int)::strtoul(value, NULL, 0);
 		else if (::strcmp(key, "DisplayTempInFahrenheit") == 0)
 			m_nextionTempInFahrenheit = ::atoi(value) == 1;
 	} else if (section == SECTION_OLED) {