Add test gui
Change control code - some bugfixes, plus stop threads in paused state
Image: Fix function type, try to ensure image is not cached, add buffer releases.
Update test gui stuff
Update nginx/rsyslog config to add specific log for LOGWARN or above
Merge branch 'master' of https://github.com/szmoore/MCTX3420.git
Merge pull request #40 from jtanx/master

Various updates