dirty: trying to output item page info for nonaoi gaze

so far it only exports "" for gaze not on an AOI.
fixed the problem with page title and args

Two strands of things here:

-- the logEvents() now export the correct item/page info for gazes not
on any AOI. This is done by looking into the AOI definitions and finding
the item info. If NO aoi, or the aoi is not part of Assessment/items,
then the page is "".

-- also fixed issues with the args parser. Now the commandline
parameters overwrite the YAML settings.