'mouseleave textarea' event seems to be fired more than it should.

== Why ?
Move the mouse hover the textarea, then leave it.

'mouseleave textarea' event is expected to be fired and to trigger a
dialog box once.

Instead :
  - the dialog box is fired twice on Firefox 29.0.  Repeating the
    operation will trigger the dialog box once as expected.

  - the dialog box is fired twice on Google Chrome Version
    34.0.1847.131. Repeating the operation will trigger the dialog box
    twice which is unexpected.
Merge branch 'master' of github.com:nomosyn/meteor-mouseleave-textarea-issue