Add Angular Project Volumes Panel

This patch creates a blank Volumes panel in the project dashboard.

It follows the pattern established by the following merged commits:
https://review.openstack.org/#/c/200324/

To be added in subsequent patches:
 - Actions
 - Tables
 - Filters via Magic Search
 - Integration to Searchlight

To test:
It doesn't work with only this one.
You can test volumes panel and table with this patch.
https://review.openstack.org/#/c/319051/

Partially-Implements: blueprint angularize-volumes-table
Change-Id: I17fdf46162187cd127d645370673fe3a3fe39db4

openstack_dashboard/dashboards/project/ngvolumes/panel.py

@@ -0,0 +1,23 @@
+#    (c) Copyright 2016 NEC Corporation, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from django.utils.translation import ugettext_lazy as _
+
+import horizon
+
+
+class NGVolumes(horizon.Panel):
+    name = _("Volumes")
+    slug = 'ngvolumes'
+    permissions = ('openstack.services.volume',)

openstack_dashboard/dashboards/project/ngvolumes/urls.py

@@ -0,0 +1,22 @@
+#    (c) Copyright 2016 NEC Corporation, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from django.conf.urls import url
+
+from openstack_dashboard.dashboards.project.ngvolumes import views
+
+
+urlpatterns = [
+    url('', views.IndexView.as_view(), name='index'),
+]

openstack_dashboard/dashboards/project/ngvolumes/views.py

@@ -0,0 +1,19 @@
+#    (c) Copyright 2016 NEC Corporation, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from django.views import generic
+
+
+class IndexView(generic.TemplateView):
+    template_name = 'angular.html'

openstack_dashboard/enabled/_1041_project_ng_volumes_panel.py

@@ -0,0 +1,30 @@
+# (c) Copyright 2016 NEC Corporation, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+# The slug of the dashboard the PANEL associated with. Required.
+PANEL_DASHBOARD = 'project'
+
+# The slug of the panel group the PANEL is associated with.
+# If you want the panel to show up without a panel group,
+# use the panel group "default".
+PANEL_GROUP = 'compute'
+
+# The slug of the panel to be added to HORIZON_CONFIG. Required.
+PANEL = 'ngvolumes'
+
+# If set to True, this settings file will not be added to the settings.
+DISABLED = True
+
+# Python panel class of the PANEL to be added.
+ADD_PANEL = 'openstack_dashboard.dashboards.project.ngvolumes.panel.NGVolumes'