yi-hack-Allwinner 0.2.3

Add output to file to snapshot web service
Add status to service web service
Add alaw compression to rRTSPServer
Add oss log removal to system.sh
Add BFCN to supported devices
RTSP: fix bug in frame resolution detection
Change baby crying to sound detection
Improve Synology Sation compatibility (thanks to @unnameable73)
Improve RTSP server reliability
Fix crontab with special chars