* [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.
Adapt JS file to the new JS API and make the module installable
[MIG] adapt form.js to the new API.
[FIX] Fix bug mentioned in pull #262.
[MIG] Make the module installable.
