Improve OGA2 wizard
Add 3 pages to the wizard:
- Explain suspend operation with POWER button
- Explain power-off and hard power-off using the POWER button
- Explain audio auto-switch when using jack plugs
Add 1 more OGA2 related change:
- Check kodi executable before building KODI menus/settings
Add 1 more general change:
- Fix composite MD5 using sorted file list
Edited by Bkg2k