DUI: Regular nodes and addons is sorted in alphabetical order.

So, it's sorted...

Reviewers
@Benglin ,@vmoyseenko, please take a look.

Link to YouTrack:
[MAGN-5270](http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-5270) DUI: Regular nodes and addons should be sorted in alphabetical order