Auto software update

[enwi]

It would be nice if RNGBridge could check for new software updates and show the user that there is a new one available.
As well as have the option to do the whole update process by itself.
For example pressing an update button and RNGBridge downloads and upgrades by itself.

[enwi]

New software updates are now displayed in the GUI and checked on startup and every 24hours see version 2.5.0