fix double click required to open modal issue.
fix double click required to open modal issue.

Closes #96

plone/mockup,derFreitag/mockup,domruf/mockup,derFreitag/mockup,plone/mockup,termitnjak/mockup,derFreitag/mockup,termitnjak/mockup,derFreitag/mockup,termitnjak/mockup,domruf/mockup,termitnjak/mockup,plone/mockup,domruf/mockup,domruf/mockup