new option -notls

We need this for novnc (encryption is done by websocket)
bump version to 1.1-7
fix argument parser

rfbPurgeArguments() moves arguments, so we need to decrement i after
purge, and use 'else if' (else we depend on argument order).

Also delete PVE_VNC_TICKET from environment (child don't need that).
set correct version in control