Merge pull request #24 from CannedFish/master

Function added: drag file to desktop; auto reorder tabindex; drag other type of entries to DirEntry -->Tanking-1988
add contextMenu and fix bugs
Merge branch 'master' of github.com:IbpTeam/demo-webde

Conflicts:
	nw/css/desktop.css
Merge pull request #25 from Tanking-1988/master

add contextMenu -> CannedFish
merge 'dentry' into master
fix bugs: some icons can't be found