update credits
update credits

previous version had a section "developers not committing since ..."
no idea how that was generated.
Same content as website http://www.libreoffice.org/about-us/credits/

Change-Id: I46f2ce1e88e946640ace81a375ce5483bec8440b
Reviewed-on: https://gerrit.libreoffice.org/4426
Reviewed-by: Fridrich Strba <cc5239b4c84e795cbd430bca0f77cadba002516f@documentfoundation.org>
Tested-by: Fridrich Strba <cc5239b4c84e795cbd430bca0f77cadba002516f@documentfoundation.org>

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core