According to late specifications we are about to loose at least 20K€ in our
marketing actions if we do not
* add a header 'Book your talks' on track page, as maybe it is unclear
that a talks list having favorite buttons is there to help you booking
your talks;
* put 'Add to favorite' button as standard instead of small;
* reorganize track card in list display, notably
* hide tags in mobile as this adds a lot of noise, especially when having
lot of tracks;
* use background color as in agenda to highlight important tracks;
* move favorite button on top of card in mobile;
* hide duration in mobile, keeping only exact datetime at which is begins;
* globally align items in desktop / mobile to have a nice display;
Task ID-2325327
PR odoo/odoo#56430
X-original-commit: 366b70f3d4758bbab0a3c16dc0ec48f300f1de8c