yi-hack-Allwinner 0.2.9

Fix error about db and add new parameter to speak*.sh
Improve privacy.sh to handle rtsp_server_yi
Add speaker_file.sh web service
Restart mp4record only if enabled
Remove framefinder
Change frame buffer reading strategy
Update rtsp_server_yi to the last version (autodetect h26*)
Restore buffer size to 262144
Fix date/time in Events web page
Add support for h265
Improve sps timing info
Add minimp4 application
Decrease footprint with gcc options
Remove useless binaries
Add image grabbing from mp4 files
Add thumbnails creation from mp4 files
Improve configure_wifi.sh script