Odoo Release Updates

[FIX] website_slides: change default `o_cc` for `record_cover`

[IMP] website_slides: improve responsiveness

[IMP] website_slides: introduce an offcanvas for filters on mobile

[IMP] website_slides: introduce a search modal on mobile

[IMP] website_slides: fine-tune homepage card design

[IMP] website_slides: fine-tune homepage and navigation

[IMP] *: use the "icons fonts" sub-asset-bundle in all asset bundles

[IMP] website_slides: require file upload/link for document and image content