[FIX] base: adapt imports

odoo/addons/__init__.py

odoo/addons/base/__init__.py

odoo/addons/base/ir/ir_fields.py

odoo/addons/base/ir/ir_filters.py

odoo/addons/base/ir/ir_qweb/__init__.py

odoo/addons/base/ir/ir_qweb/assetsbundle.py

odoo/addons/base/ir/ir_qweb/fields.py

odoo/addons/base/ir/ir_qweb/ir_qweb.py

odoo/addons/base/ir/ir_qweb/qweb.py

odoo/addons/base/module/module.py

odoo/addons/base/report/preview_report.py

odoo/addons/base/res/res_currency.py

odoo/addons/base/tests/test_ir_http.py

odoo/addons/base/tests/test_mimetypes.py

odoo/addons/base/tests/test_uninstall.py

odoo/addons/base/workflow/workflow_report.py

odoo/addons/test_limits/models.py

odoo/addons/test_mimetypes/tests/test_guess_mimetypes.py

odoo/addons/test_new_api/models.py

odoo/addons/test_new_api/template.xml