Fix Qweb templates. (#561)

* [FIX][web_m2x_options] Fix Qweb templates.

They were trying to replace non-existing elements, and this was being logged to console:

    Can't find "a.oe_m2o_cm_button" when extending template FieldMany2One
    Can't find "span.badge" when extending template FieldMany2ManyTag

* Raise version correctly.

* [FIX] Make many2many_tags tag deletion work again

* Correct replacement of event

Instead of overwriting all events from upstream widget, better just overwrite the one you need and inherit the rest.

web_m2x_options/static/src/js/form.js

@@ -260,13 +260,9 @@ odoo.define('web_m2x_options.web_m2x_options', function (require) {
     });
 
     form_relational.FieldMany2ManyTags.include({
-        events: {
-            'click .o_delete': function(e) {
-                this.remove_id($(e.target).parent().data('id'));
-            },
-            'click .badge': 'open_badge',
-            'mousedown .o_colorpicker span': 'update_color',
-            'focusout .o_colorpicker': 'close_color_picker',
+        init: function () {
+            this.events["click .badge"] = "open_badge";
+            return this._super.apply(this, arguments);
         },
         show_error_displayer: function () {
             if ((typeof this.options.m2o_dialog === 'undefined' && this.can_create) ||