disable inter's on-by-default ligatures, redo icon/emote CSS

also:
* proper styling for auth page
* clean-up of html, css, js
* fix scroll indicator eating mouse events
* fix scroll indicator on (mobile?) chrome
* re-calculate timestamp width on each new message, to account for
  unknown/unexpected formats like the inclusion of AM/PM

ChatTwo/Http/Processing.cs

@@ -50,7 +50,7 @@ public class Processing
         if (chunk is IconChunk { } icon)
         {
             return IconUtil.GfdFileView.TryGetEntry((uint) icon.Icon, out _)
-                ? $"<span class=\"gfd-icon gfd-icon-hq-{(uint)icon.Icon}\" style=\"zoom:calc(16 * 4 / 3 / 40 * 1.4)\"></span>"
+                ? $"<span class=\"gfd-icon gfd-icon-hq-{(uint)icon.Icon}\"></span>"
                 : "";
         }
 
@@ -63,7 +63,7 @@ public class Processing
                 // The emote name should be safe, it is checked against a list from BTTV.
                 // Still sanitizing it for the extra safety.
                 if (image is { Failed: false })
-                    return $"<span style=\"zoom:calc(16 * 4 / 3 / 40 * 1.4)\"><img class=\"emote-icon emote-icon-hq\" src=\"/emote/{Sanitizer.Sanitize(emotePayload.Code)}\"></span>";
+                    return $"<span class=\"emote-icon\"><img src=\"/emote/{Sanitizer.Sanitize(emotePayload.Code)}\"></span>";
             }
 
             var colour = text.Foreground;
@@ -92,4 +92,4 @@ public class Processing
 
         return string.Empty;
     }
-}
+}