Fixed: Broken draggable/resizable modals in Helveticus (OFBIZ-12992)

CSS rules were preventing jQuery UI Dialogs to be draggable
(!important in CSS overriding top/left inline styles).
Removes "transition: .5s" on dialog elements : it causes
slowdowns on drag/resize (a CSS animation is triggered each
time the user moves/resizes the dialog)

Thanks: Gavinju for reporting and Florian Motteau for providing the PR.
1 file changed