add: app_data api

crates/app/src/public/html/components.lisp

@@ -779,7 +779,6 @@
             (div
                 ("class" "flex gap-2")
                 (button
-                    ("class" "primary")
                     (text "{{ text \"communities:action.create\" }}"))
 
                 (text "{% if drawing_enabled -%}")
@@ -1879,7 +1878,6 @@
     ("id" "join_or_leave")
     (text "{% if not is_owner -%} {% if not is_joined -%} {% if not is_pending %}")
     (button
-        ("class" "primary")
         ("onclick" "join_community()")
         (text "{{ icon \"circle-plus\" }}")
         (span