pqProxyWidget: make showing group headers/footers optional

Make display of group headers and footers optional for custom
ParaView-based applications. Headers and footers are visible by
default, and are left on in the ParaView GUI application.
13 jobs for !4341 with enable-hide-property-group-headers
detached
Status Job ID Name Coverage
  Package
manual #5168772
linux docker paraview build manual
docs:generate
manual #5168771
linux docker paraview build manual
spack:centos7
 
  External
passed cdash-buildbot

passed cdash-commit

passed ghostflow-branch-check-master

canceled paraview@master-dres-osx-shared-release+gui+python3

passed paraview@master-luigi-linux-shared-release+gui+mpi+python3

01:31:07

failed paraview@master-nemesis-windows-shared-release+gui+kits+mpi+python3

01:12:04

passed paraview@master-nemesis-windows-shared-release+gui+mpi

00:59:20

failed paraview@master-tylo-windows-shared-release+gui+python3+qtmin+tbb

05:11:52

failed paraview@master-tylo-windows-shared-release+gui+python3+tbb

passed paraview@master-vall-linux-shared-debug+adios2+extdeps+gui+mpi+python3

01:24:36

canceled paraview@master-tylo-windows-shared-release+gui+python3+tbb

01:28:49