This commit fixes a few wording and view issues, notably:
- Avoid breaking the talk description page when description is very long
- Modify all occurrences of "starts at" to "starts on" (better wording)
- Move the "hide sponsor" concept from _exhibitor to _track_online
To be able to hide the sponsors on the "registration confirmed" template
- Hide the sponsor block in "mobile" view (breakpoint md)
- Make some minor layout adjustments
Task ID-2325327
PR odoo/odoo#56430
X-original-commit: 342799035911123b609876268a86c1da251f7645
Aurélien Warnon
afb6749426