disable disk sync on startup

check for apex dir

ensure cache copies when events have ended

add duration to cache

avoid running ffprobe for each segment multiple times

fix default motion comment

fix rtmp again

add links in docs to other sites

Merge pull request blakeblackshear#2026 from blakeblackshear/recordin…

…g_fix

0.9.2

Merge pull request blakeblackshear#1922 from blakeblackshear/fix_logo

fix logo used for birdseye