added AR translations to the Friendica addons

Thanks to the work of طاهر, Farida Khalaf, محمد أحمد, abidin toumi, Abdullah Alsabi, ButterflyOfFire and ominds the translation of Friendica into Arabic has crossed the magic 50% progress mark, so we now include their work into the addons repository.

testdrive/lang/ar/messages.po

@@ -0,0 +1,40 @@
+# ADDON testdrive
+# Copyright (C)
+# This file is distributed under the same license as the Friendica testdrive addon package.
+# 
+# 
+# Translators:
+msgid ""
+msgstr ""
+"Project-Id-Version: friendica\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2021-02-01 18:15+0100\n"
+"PO-Revision-Date: 2021-02-01 18:21+0000\n"
+"Last-Translator: Transifex Bot <>\n"
+"Language-Team: Arabic (http://www.transifex.com/Friendica/friendica/language/ar/)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Language: ar\n"
+"Plural-Forms: nplurals=6; plural=n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 && n%100<=10 ? 3 : n%100>=11 && n%100<=99 ? 4 : 5;\n"
+
+#: testdrive.php:64
+msgid "Administrator"
+msgstr ""
+
+#: testdrive.php:89
+#, php-format
+msgid "Your account on %s will expire in a few days."
+msgstr ""
+
+#: testdrive.php:90
+msgid "Your Friendica test account is about to expire."
+msgstr ""
+
+#: testdrive.php:91
+#, php-format
+msgid ""
+"Hi %1$s,\n"
+"\n"
+"Your test account on %2$s will expire in less than five days. We hope you enjoyed this test drive and use this opportunity to find a permanent Friendica website for your integrated social communications. A list of public sites is available at %s/siteinfo - and for more information on setting up your own Friendica server please see the Friendica project website at https://friendi.ca."
+msgstr ""

testdrive/lang/ar/strings.php

@@ -0,0 +1,7 @@
+<?php
+
+if(! function_exists("string_plural_select_ar")) {
+function string_plural_select_ar($n){
+	$n = intval($n);
+	if ($n==0) { return 0; } else if ($n==1) { return 1; } else if ($n==2) { return 2; } else if ($n%100>=3 && $n%100<=10) { return 3; } else if ($n%100>=11 && $n%100<=99) { return 4; } else  { return 5; }
+}}