fix(mask): IE refocusing inputs on mouseout
fix(mask): IE refocusing inputs on mouseout

mouseout is used for keeping oldSelectionLength up-to-date.
Unfortunately IE would refocus inputs when getting seletion length. Now
mouseout listener is only active when clicking and dragging out of the
input, which was why the event was needed in the first place.

dhustlerz/angular-ui-OLDREPO,dhustlerz/angular-ui-OLDREPO,stevenkang3/angular-ui-OLDREPO,zjplovemm/angular-ui-OLDREPO,angular-ui/angular-ui-OLDREPO,stevenkang3/angular-ui-OLDREPO,zjplovemm/angular-ui-OLDREPO