Merge remote-tracking branch 'origin/develop' into oos_build

modules/base/pymod/table.py

modules/gfx/pymod/export_scene.cc

modules/gui/pymod/CMakeLists.txt

modules/gui/pymod/init_spacenav.py

modules/gui/pymod/table.py

modules/gui/src/python_shell/python_shell_widget.cc

modules/gui/src/sequence_viewer/sequence_viewer.cc

modules/io/doc/mmcif.rst

modules/io/pymod/export_mmcif_io.cc

modules/io/src/mol/mmcif_info.cc

modules/io/src/mol/mmcif_info.hh

modules/io/src/mol/mmcif_reader.cc

modules/io/tests/test_mmcif_info.cc

modules/io/tests/testfiles/mmcif/atom_site.mmcif