pdf: use DejaVuSans font in Arabic and Persian (#16040, #18586, #10681)

git-svn-id: https://svn.redmine.org/redmine/trunk@13729 e93f8b46-1217-0410-a6f0-8f06a7374b81

config/locales/ar.yml

@@ -140,7 +140,7 @@ ar:
   general_csv_separator: ','
   general_csv_decimal_separator: '.'
   general_csv_encoding: ISO-8859-1
-  general_pdf_fontname: freesans
+  general_pdf_fontname: DejaVuSans
   general_first_day_of_week: '7'
 
   notice_account_updated: لقد تم تجديد الحساب بنجاح.

config/locales/fa.yml

@@ -141,7 +141,7 @@ fa:
   general_csv_separator: ','
   general_csv_decimal_separator: '.'
   general_csv_encoding: UTF-8
-  general_pdf_fontname: freesans
+  general_pdf_fontname: DejaVuSans
   general_first_day_of_week: '6'
 
   notice_account_updated: حساب شما بروز شد.