general: Misc UI tweaks
- gfu-main: Add mnemnonics to the buttons from the firmware confirmation dialog
- gfu-main: Add missing question mark to the confirmation dialog title
- gfu-release-row: Add missing mnemonics
- gfu-main: Add tooltip to the "Main Menu" button
- gfu-main: Allow opening Main Menu with F10
- general: Add ellipsis to some button labels
See commit description for more details.
Edited by Automeris naranja