[MIG] web_responsive: Migration to 16.0

Fix for optional dropdown checkbox in list view

Made Changes for compatibility with web_chatter_position module

Fix for attachment delete dialog

web_responsive/models/__init__.py

@@ -1 +0,0 @@
-from . import res_users

web_responsive/models/res_users.py

@@ -1,26 +0,0 @@
-# Copyright 2018-2019 Alexandre Díaz
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
-
-from odoo import fields, models
-
-
-class ResUsers(models.Model):
-    _inherit = "res.users"
-
-    chatter_position = fields.Selection(
-        [("normal", "Normal"), ("sided", "Sided")],
-        default="sided",
-    )
-
-    """Override to add access rights.
-    Access rights are disabled by default, but allowed on some specific
-    fields defined in self.SELF_{READ/WRITE}ABLE_FIELDS.
-    """
-
-    @property
-    def SELF_READABLE_FIELDS(self):
-        return super().SELF_READABLE_FIELDS + ["chatter_position"]
-
-    @property
-    def SELF_WRITEABLE_FIELDS(self):
-        return super().SELF_WRITEABLE_FIELDS + ["chatter_position"]