Github user Leemoonsoo commented on the issue:
https://github.com/apache/zeppelin/pull/1842
Thanks for the reviews and verifications!
@AhyoungRyu Addressed all the comments and fixed drag and drop problem.
When there is 0 or 1 visualization, reorder doesn't make any sense and i
think we don't need to bother user with reorder feature in this case.
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