5f3a11a5dc
- Drop icon fonts (Glyphicons and Forkawesome). Add SVG files from [Bootstrap Icons](https://icons.getbootstrap.com/) as replacements. (See [Inline SVG vs Icon Fonts](https://css-tricks.com/icon-fonts-vs-svg/) and [Stop Using Icon Fonts](https://www.irigoyen.dev/blog/2021/02/17/stop-using-icon-fonts/) for the reasons to drop icon fonts. In short, they're an obsolete hack.) - Add logos of payment card brands (copied from Stripe) and use them in the payment method selection page. - Refresh the icons of social platforms, optimize them, and give them text labels. (Closes #2117. Closes #2309.)