* Remove trailing spaces
* Use 4 spaces for indentation everywhere

See discussion at https://lists.freedesktop.org/archives/libreoffice/2017-September/078433.html

Change-Id: I0bb9a0b9b0502cdf0870529cea37ee9c4d1ffdf4
Reviewed-on: https://gerrit.libreoffice.org/41009Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
Tested-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>