Add 80+ additional icons from FontAwesome (#6803)

* Add 80+ additional icons from FontAwesome

* fix: color switch transition, add 6 more icons to fill out grid

* Add strict validation for collection icon

* fix: Avoid import from app in server

server/validation.ts

@@ -246,7 +246,3 @@ export class ValidateColor {
   public static regex = /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i;
   public static message = "Must be a hex value (please use format #FFFFFF)";
 }
-
-export class ValidateIcon {
-  public static maxLength = 50;
-}