Upgrades for polish translation file

Hi,

Current translation file for ver. 2.8.1-911.

Please add this into trunk

Thx
spark_i18n_pl.properties.zip (14164 Bytes)

I have merged your PR Update spark_i18n_pl.properties by Martini26 · Pull Request #237 · igniterealtime/Spark · GitHub

You can find and test these changes in 912 build here Ignite Realtime: Spark Nightly Builds