Merge pull request #4656 from tgxworld/dont_display_an_extra_button_for_wiki_post

UX: Display wiki icon on post edits indicator.

config/locales/client.en.yml

@@ -1700,6 +1700,7 @@ en:
       edit: "Editing {{link}} {{replyAvatar}} {{username}}"
       edit_reason: "Reason: "
       post_number: "post {{number}}"
+      wiki_last_edited_on: "wiki last edited on"
       last_edited_on: "post last edited on"
       reply_as_new_topic: "Reply as linked Topic"
       continue_discussion: "Continuing the discussion from {{postLink}}:"
@@ -1752,9 +1753,6 @@ en:
       via_auto_generated_email: "this post arrived via an auto generated email"
       whisper: "this post is a private whisper for moderators"
 
-      wiki:
-        about: "this post is a wiki"
-
       archetypes:
         save: 'Save Options'