removed database connection from ktr
[it] fixed languagePackInstaller-specific messages
[de] updates
Revert "[it] fixed languagePackInstaller-specific messages"

This reverts commit 5e1c3da1a6c37224f1411c118a4e74eb31a6b961.
Revert "Revert "[it] fixed languagePackInstaller-specific messages""

This reverts commit 23b883cda042489c801c6a20c19ac8e61ebe4d8f.
Revert "[de] updates"

This reverts commit dbccd13a55ad90ad245dc7844587baf132915280.
[de] updates
[pl] merged contribution from Daniel Kozlowski @pentaho.com