Now use file browser to select url config file, but you can
define USE_SMS_INPUT in update_settings.h to use old methode.
The SMS-Methode is not very user friendly
-moved software_update.cpp/h to update_menue.cpp/h
-add new class CUpdateSettings into files update_settings.cpp/h
-using update settings in sub menus, so we've got only hotkeys
and less menu items in update menu
-reworked some locales
