This revert some changes introduced in [1]. The o_editable class already has its own behaviors, which would be in conflict with making it a marker for adding `contenteditable="true"`. Also this found that commit [2] stop using the "web_editor.banner" template but did not remove it. Will be removed in master. [1]: https://github.com/odoo/odoo/commit/17ee75a84d00eedb1778edcdbd541025e8473ef0 [2]: https://github.com/odoo/odoo/commit/d7245d2abf528d093226c80e40975e63d61e8997#diff-aa4686cd9f6a0d50e1040ba3dda0b29e9898e7cc31a47f1f02b46a2c4c047a72R2223 See https://github.com/odoo/odoo/pull/137373#issuecomment-1816509437 Related to task-2782426 closes odoo/odoo#143669 X-original-commit: 7f1021b8484cbc17f922c0e69d160a6ff672e7dc Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com> Co-authored-by: qsm-odoo <qsm@odoo.com>