Update checker, better version sorting
The key feature this time is the much requested update checker:
You will see a text on the bottom left showing the version number and either the legend "(up to date)" or an update button. You can click the button to go to the download page, check what's new and update if interested.
The version list has been improved too. Now it properly shows versions from newest to oldest. 3.4 will no longer appear above 3.4.4. Also, refreshing the version list will not prevent you from downloading while it's fetching the updated info.
Finally, all gamepad events have been removed from InputMap. This fixes a bug where you could launch Godot over and over every time the button assigned to ui_accept was pressed, since those are handled even when the window is out of focus.