in work thumb on slider
Merge branch 'jsonConfig' into sliderThumb
fix thumbnail sync
 fix mouse leave event
merge jsonConfig
fix thumbnail preview
 limit the number of slice to 200
fix thumbslider
merge jsonConfig
jslint
merge from jsonConfig
fix hove default + clean code
fix comments
merge jsonConfig
Merge pull request #457 from kaltura/sliderThumb

Scrubber preview using thumbnail - please review