[IMP] web: Make archive:unarchive buttons manage returned actions

Purpose
=======

When calling toggle_active, you may sometimes retrieve an action to
execute. For example, when archiving an employee, it opens a wizard
to provide information about the departure, and choose an offboarding
plan.

This commit modifies the way toggleActive, actionArchive and
actionUnarchive works to manage this behavior.

addons/hr/models/hr_employee.py

@@ -291,6 +291,7 @@ class HrEmployeePrivate(models.Model):
                 'view_mode': 'form',
                 'target': 'new',
                 'context': {'active_id': self.id},
+                'views': [[False, 'form']]
             }
         return res
 

addons/web/static/src/js/views/basic/basic_model.js

@@ -1187,10 +1187,18 @@ var BasicModel = AbstractModel.extend({
                 method: 'toggle_active',
                 args: [resIDs],
             })
-            .then(function () {
+            .then(function (action) {
                 // optionally clear the DataManager's cache
                 self._invalidateCache(parent);
-                return self.reload(parentID);
+                if (!_.isEmpty(action)) {
+                    return self.do_action(action, {
+                        on_close: function () {
+                            return self.reload(parentID);
+                        }
+                    });
+                } else {
+                    return self.reload(parentID);
+                }
             });
     },
     /**
@@ -1211,10 +1219,18 @@ var BasicModel = AbstractModel.extend({
                 method: 'action_archive',
                 args: [resIDs],
             })
-            .then(function () {
+            .then(function (action) {
                 // optionally clear the DataManager's cache
                 self._invalidateCache(parent);
-                return self.reload(parentID);
+                if (!_.isEmpty(action)) {
+                    return self.do_action(action, {
+                        on_close: function () {
+                            return self.reload(parentID);
+                        }
+                    });
+                } else {
+                    return self.reload(parentID);
+                }
             });
     },
     /**
@@ -1235,10 +1251,18 @@ var BasicModel = AbstractModel.extend({
                 method: 'action_unarchive',
                 args: [resIDs],
             })
-            .then(function () {
+            .then(function (action) {
                 // optionally clear the DataManager's cache
                 self._invalidateCache(parent);
-                return self.reload(parentID);
+                if (!_.isEmpty(action)) {
+                    return self.do_action(action, {
+                        on_close: function () {
+                            return self.reload(parentID);
+                        }
+                    });
+                } else {
+                    return self.reload(parentID);
+                }
             });
     },
     /**