fancytree still hidden after reload

[amiriahmad72]

If fancytree initialized without source data, then after reload with some data tree still hidden.

Expected and Actual Behavior

• Expected: remove fancytree-helper-hidden class name after call reload function with new data.
• Actual: tree still hidden after reload

Steps to Reproduce the Problem

1. initialize fancytree with no source option
2. reload tree with new data
3. inspect fancytree element and remove fancytree-helper-hidden class)

http://jsfiddle.net/wm1sktq2/4/