some minor fixes on configuration saving/loading

hi,

two minor fixes : 
-first one is adding camFit camKeepAspect videoFit videoKeepAspect configuration saving in xml, which i forgot...
-second one is fixing ( i think) an issue on timeline duration, which loads by default at 100s longs instead of reading xml Duration. this issue overwrite the *_trigger.xml files by setting every timestaps > 100s longs to 00:01:40:001