Merge pull request #7 from danielwerthen/master

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Merge pull request #8 from danielwerthen/master

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Added voting instructions
Added db connectivity to VotingService, and a demo Module named VoteDummyModule to test voting functionality.
Merge pull request #19 from teodorl/master

Added voting instructions
Merge pull request #20 from krippa-hogberg/master

Added db functionality to VotingService
Added missing files in project, extended UserCanVote to check for specific tracks