doc: replace font-awesome icons by translated captions

This removes use of a remote CDN (Cloudflare), as font-awesome is no longer
used.

doc/ja/includes/attributes-ja.adoc

@@ -0,0 +1,23 @@
+// Japanese translation, courtesy of Takayuki Konishi <seannos.takayuki@gmail.com>
+:appendix-caption: 付録
+:appendix-refsig: {appendix-caption}
+:caution-caption: 注意
+//:chapter-signifier: ???
+//:chapter-refsig: {chapter-signifier}
+:example-caption: 例
+:figure-caption: 図
+:important-caption: 重要
+:last-update-label: 最終更新
+ifdef::listing-caption[:listing-caption: リスト]
+ifdef::manname-title[:manname-title: 名前]
+:note-caption: 注記
+//:part-signifier: ???
+//:part-refsig: {part-signifier}
+ifdef::preface-title[:preface-title: まえがき]
+//:section-refsig: ???
+:table-caption: 表
+:tip-caption: ヒント
+:toc-title: 目次
+:untitled-label: 無題
+:version-label: バージョン
+:warning-caption: 警告

doc/ja/weechat_dev.ja.adoc

@@ -2,7 +2,7 @@
 :author: Sébastien Helleu
 :email: flashcode@flashtux.org
 :lang: ja-jp
-:toc-title: 目次
+include::includes/attributes-ja.adoc[]
 
 翻訳者:
 

doc/ja/weechat_faq.ja.adoc

@@ -2,7 +2,7 @@
 :author: Sébastien Helleu
 :email: flashcode@flashtux.org
 :lang: ja-jp
-:toc-title: 目次
+include::includes/attributes-ja.adoc[]
 
 翻訳者:
 

doc/ja/weechat_plugin_api.ja.adoc

@@ -2,7 +2,7 @@
 :author: Sébastien Helleu
 :email: flashcode@flashtux.org
 :lang: ja-jp
-:toc-title: 目次
+include::includes/attributes-ja.adoc[]
 
 翻訳者:
 

doc/ja/weechat_quickstart.ja.adoc

@@ -2,7 +2,7 @@
 :author: Sébastien Helleu
 :email: flashcode@flashtux.org
 :lang: ja-jp
-:toc-title: 目次
+include::includes/attributes-ja.adoc[]
 
 翻訳者:
 

doc/ja/weechat_relay_weechat.ja.adoc

@@ -2,7 +2,7 @@
 :author: Sébastien Helleu
 :email: flashcode@flashtux.org
 :lang: ja-jp
-:toc-title: 目次
+include::includes/attributes-ja.adoc[]
 
 翻訳者:
 

doc/ja/weechat_scripting.ja.adoc

@@ -2,7 +2,7 @@
 :author: Sébastien Helleu
 :email: flashcode@flashtux.org
 :lang: ja-jp
-:toc-title: 目次
+include::includes/attributes-ja.adoc[]
 
 翻訳者:
 

doc/ja/weechat_user.ja.adoc

@@ -2,7 +2,7 @@
 :author: Sébastien Helleu
 :email: flashcode@flashtux.org
 :lang: ja-jp
-:toc-title: 目次
+include::includes/attributes-ja.adoc[]
 
 翻訳者: