Copy & Paste in same Folder Fix

#739
Merge branch '2.x' into 2.1
enable dblClick on fileSelector(div) in icon view
[ui,cwd] fix hover of cwd
Merge branch '2.x' into 2.1
[css.cwd] add "border:none;" into .elfinder-cwd-file
Merge branch '2.x' into 2.1
[core] add 'distance:8' into fm.draggable object

For prevent unwanted drags when (dbl)clicking.
Merge branch '2.x' into 2.1
Merge branch '2.1' of https://github.com/Studio-42/elFinder into 2.1

Conflicts:
	js/ui/cwd.js