Add new combined view

An experimental view based on the relationship view.  It displays
both relationships and events for a given person.  More detail is
displayed including attributes and quick access to source media.

This is still a work in progress, but is being relaesed for user
feedback.  In particular different navigation needs tobe written.

CombinedView/combinedview.gpr.py

@@ -0,0 +1,35 @@
+#
+# Gramps - a GTK+/GNOME based genealogy program
+#
+# Copyright (C) 2020      Nick Hall
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+register(VIEW,
+id = 'combinedview',
+name = _("Relationships/Events"),
+description = _("A view showing relationships and events for a person"),
+version = '1.0',
+gramps_target_version = '5.1',
+status = STABLE,
+fname = 'combinedview.py',
+authors = ["The Gramps project"],
+authors_email = ["http://gramps-project.org"],
+category = ("Relationships", _("Relationships")),
+viewclass = 'CombinedView',
+order = START,
+)
+