Improvments/Fixes

• Fixed: log levels (#16)
• Adjust: config/channelselection: remove selected channels from available list (#17)
• Improvement: insert date/time/length to delete confirmation (#15)
• Improvement: major speed-up display of recording list (#14)

Build for Fedora Linux can be found here
https://copr.fedorainfracloud.org/coprs/pbiering/vdr_extensions/packages/