[FIX] bus,im_odoo_support, web*: fix various memory leaks

* Tip are never destroyed when change view mode
* unbind methods
* mail: memory leak with unbind methods
* web: memory leak because 'ui-autocomplete' is never destroyed
* web_editor: memory leak for wrong unbind on destroy
* web: memory leak: must remove fileupload handler
* bus: memory leak: correctly debind handlers on window in bus.Bus
* remove handlers on switch buttons and views $buttons
* remove handlers on breadcrumbs
* web: memory leak: correctly debind handlers
* im_odoo_support: memory leak: remove fileupload handler odoo_support

Note: part of this commit was actually authored by aab

1 files changed, 6 insertions, 0 deletions

diff --git a/addons/web/static/src/js/framework/view.js b/addons/web/static/src/js/framework/view.js
index b234d02390f..bc06d062819 100644
--- a/addons/web/static/src/js/framework/view.js
+++ b/addons/web/static/src/js/framework/view.js
@@ -258,6 +258,12 @@ var View = Widget.extend({
     get_context: function () {
         return {};
     },
+    destroy: function () {
+        if (this.$buttons) {
+            this.$buttons.off();
+        }
+        return this._super.apply(this, arguments);
+    },
 });
 
 return View;