fix delete node of content tree will clear content all node
when add folder/link will that user know add in what folder
Add click on null space context menu
Remove click on null space context menu
Not show “add folder” and “add link” when right click on LINK
1. add split panel.
2. double click on node in content tree will do open link or select
folder.
all containers fit the screen
add “add folder” and “add link” button on the tree view top
delete no use comment and add css style for split pane
right click on link will show “Open” option
add icon in “add folder” and “add link“ buttons
add mouse over on link will show description
modify drive api key
Merge pull request #22 from blacktea1105/master

beta v2