Improved hiding of dropdown: Instead of using negative left/right position the dropdown visibility is now controlled by display attribute.
Fixed broken calculation of width:
 - Due to changed hiding by display property some width calculation failed. This is now fixed by recalculating the width once the element get visible.
Fixed exception due to invisibility of dropdown.
Fixed failing tests
Fixed failing tests by correcting the module name
Improved hiding of dropdown by setting top property to -9000px
Merge branch 'master' of https://github.com/ArcBees/gwtchosen
Merge pull request #133 from VEDAGroup/master

Improved hiding of dropdown: Instead of using negative left/right positi...