[TYPO3-core] RFC: #14717: [Usability] Add delay to close the context menu

[Steffen Kamper]

Hi,

thx for the review. Also good to know that a bug in TV d&d script cause 
the problem there.

Committed attached v2 to svn
4_3 rev 7941
trunk rev 7942

I renamed the variable as Dmitry requested.

vg Steffen