Final score is wrong (doubled) if tournament only has one round

[fmuecke]

Original report by Florian Mücke (Bitbucket: fmuecke, GitHub: fmuecke).

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For our little team tournaments we use only one round. The table (and printout) however counts the first round twice and adds them together for the final score

[fmuecke]

Original comment by Florian Mücke (Bitbucket: fmuecke, GitHub: fmuecke).

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score is not doubled anymore if tournament has only one round (fixes #55)