Level 4 decos, black bars, ignore updates

[chpoit]

• Added level 4 slot support (Level 4 slots identified as level 3 slots #35)
• Fixed restarting the app after setting a different game language (ERROR - An error occured <class 'KeyError'> #34)
• You can now ignore an update
• You can now add invalid skills (or skills that are not in the list, don't come to me if the builder doesn't work)
• You can record in windowed mode (See next point)
• You can now let the app remove black bars from videos
  • It is experimental. You should fix your recordings first if it doesn't work
  • Black bars can be caused by not setting your TV size to 100% in the switch settings.