If "Group by User" filter is enabled logged user should be located at the top of Kanban Board

Resolves http://pearlog.pearshadow.com/tickets/showKanban?tab=ticketdetails#/tickets/showTicket/6107

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Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests cases written to verify your changes. Feel free to include test cases that haven't been covered in this PR, but should be covered in a future PR.

• Test A
• Test B

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules