Fix tag ordering in humanized_essential_tag_string.

* Pick the largest character or copyright tags by post count. Previously
  we picked the tags with the longest names, which was nonsensical.

* Remove tag cateogory logic from config file. We can't avoid hardcoding
  some knowledge about tag categories here, so there's no point in trying.

This affects tab titles on post show pages as well as filenames in
downloaded images.

config/danbooru_default_config.rb

@@ -247,7 +247,6 @@ module Danbooru
           "short" => "gen",
           "extra" => [],
           "header" => %{<h1 class="general-tag-list">Tags</h1>},
-          "humanized" => nil,
           "relatedbutton" => "General",
           "css" => {
             "color" => "var(--general-tag-color)",
@@ -259,12 +258,6 @@ module Danbooru
           "short" => "char",
           "extra" => ["ch"],
           "header" => %{<h2 class="character-tag-list">Characters</h2>},
-          "humanized" => {
-            "slice" => 5,
-            "exclusion" => [],
-            "regexmap" => /^(.+?)(?:_\(.+\))?$/,
-            "formatstr" => "%s"
-          },
           "relatedbutton" => "Characters",
           "css" => {
             "color" => "var(--character-tag-color)",
@@ -276,12 +269,6 @@ module Danbooru
           "short" => "copy",
           "extra" => ["co"],
           "header" => %{<h2 class="copyright-tag-list">Copyrights</h2>},
-          "humanized" => {
-            "slice" => 1,
-            "exclusion" => [],
-            "regexmap" => //,
-            "formatstr" => "(%s)"
-          },
           "relatedbutton" => "Copyrights",
           "css" => {
             "color" => "var(--copyright-tag-color)",
@@ -293,12 +280,6 @@ module Danbooru
           "short" => "art",
           "extra" => [],
           "header" => %{<h2 class="artist-tag-list">Artists</h2>},
-          "humanized" => {
-            "slice" => 0,
-            "exclusion" => %w(banned_artist),
-            "regexmap" => //,
-            "formatstr" => "drawn by %s"
-          },
           "relatedbutton" => "Artists",
           "css" => {
             "color" => "var(--artist-tag-color)",
@@ -310,7 +291,6 @@ module Danbooru
           "short" => "meta",
           "extra" => [],
           "header" => %{<h2 class="meta-tag-list">Meta</h2>},
-          "humanized" => nil,
           "relatedbutton" => nil,
           "css" => {
             "color" => "var(--meta-tag-color)",
@@ -322,11 +302,6 @@ module Danbooru
 
 #TAG ORDERS
 
-    #Sets the order of the humanized essential tag string (models/post.rb)
-    def humanized_tag_category_list
-      @humanized_tag_category_list ||= ["character","copyright","artist"]
-    end
-
     #Sets the order of the split tag header list (presenters/tag_set_presenter.rb)
     def split_tag_header_list
       @split_tag_header_list ||= ["copyright","character","artist","general","meta"]