Benglin/Dynamo — pull request #198 by aosyatnik (2014-11-12 16:47:24+00:00)
Title: DUI: Addons refresh icon. Part 1

To `CustomNodeSearchElement` added 2 properties: `CurrentVersion` and `LastVersion`.
Current is loaded from XML-file.
Last is loaded from server.
In next PR I will compare them to show Refresh icon.

Reviewers
@Benglin ,@vmoyseenko, please take a look.