fix threading bugs, add further HTML controls
-rwxr-xr-x 12015 black.jpg
-rwxr-xr-x 47239 http_server_39.py
-rwxr-xr-x 1330 index.html
-rwxr-xr-x 6776 obs_ppt.py
-rwxr-xr-x 10604 obs_ppt_server.py
-rw-r--r-- 4386 ppt-control.js
-rw-r--r-- 1407 settings.js
-rw-r--r-- 654 style.css
-rw-r--r-- 11325 white.jpg