New version or update available

[gnaske]

I used an old Iron version 21 and never discovered there was newer versions.

We need a real time update message in the browser, when there had been an update or a new version is available.
And in the settings, "About", what version we current use - What version which is the newest - And an update button to click at, if we want to update.

Thank you for a perfect browser

[nettrotter]

yeah, agree on intergreting update checking in the about: tab.