fix(spp_scoring): restrict Activate/Deactivate buttons to scoring managers

Officers and viewers could see and click Activate/Deactivate buttons
on scoring models even though their ACLs prevented the write from
succeeding. Now the buttons are only visible to scoring managers.

Author: emjay0921

spp_scoring/views/scoring_model_views.xml

@@ -13,12 +13,14 @@
                         type="object"
                         class="btn-primary"
                         invisible="is_active"
+                        groups="spp_scoring.group_scoring_manager"
                     />
                     <button
                         name="action_deactivate"
                         string="Deactivate"
                         type="object"
                         invisible="not is_active"
+                        groups="spp_scoring.group_scoring_manager"
                     />
                     <field name="is_active" widget="boolean_toggle" readonly="1" />
                 </header>