Error response enhancements, CoreID auth client backend

src/resources/views/oauth2/authorize.pug

@@ -9,7 +9,12 @@ block content
     else
         p This will allow #{clientName} full access to your account.
 
-    //p After allowing this, you may not be prompted again.
+    div(style='display: flex; flex-direction: row; padding-top: 20px')
+        form(method='get' action=(hasRoute('home') ? named('home') : route('/')))
+            button.button(type='submit') Deny
 
-    if buttonText && buttonUrl
-        a.button(href=buttonUrl) #{buttonText}
+        form(method='post' style='padding-left: 20px')
+            button.button(type='submit') Allow
+
+    p
+        small(style='color: var(--color-accent-text)') After allowing, will redirect to: #{redirectDomain}