Removed useless empty lines that survived source code formatting.

Jean-Noel Rouvignac

04.40.2014 2de572c4a763152308c8be729d87eeaa71b5fe4e

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relation.plugin.user-friendly-name=Wtyczka
user-friendly-name=\u015acie\u017cka Wtyczek
relation.plugin.user-friendly-plural-name=Wtyczki