[FIX] web: reuse the same BasicModel instance

Before this revision, only the FormView allowed to reuse the same datapoint.
This was only used when opening a FormViewDialog when opening the form view
of record in a one2many field.

However, this could be useful in other places for other views. In Studio for
example, we need to instantiate a x2m view without the parent view ; we thus
need to be able to reuse the same model for all basic views.

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

@@ -47,7 +47,10 @@ var BasicView = AbstractView.extend({
         this.loadParams.context = params.context || {};
         this.loadParams.limit = parseInt(viewInfo.arch.attrs.limit, 10) || params.limit;
         this.loadParams.viewType = this.viewType;
+        this.loadParams.parentID = params.parentID;
         this.recordID = params.recordID;
+
+        this.model = params.model;
     },
 
     //--------------------------------------------------------------------------

addons/web/static/src/js/views/form/form_view.js

@@ -27,7 +27,6 @@ var FormView = BasicView.extend({
 
         var mode = params.mode || (params.currentId ? 'readonly' : 'edit');
         this.loadParams.type = 'record';
-        this.loadParams.parentID = params.parentID;
 
         this.controllerParams.disableAutofocus = params.disable_autofocus;
         this.controllerParams.hasSidebar = params.sidebar;
@@ -41,7 +40,6 @@ var FormView = BasicView.extend({
         this.controllerParams.mode = mode;
 
         this.rendererParams.mode = mode;
-        this.model = params.model;
     },
 
     //--------------------------------------------------------------------------