[Plugin: TF FAQ] Translations

1. Please, make all text translatable.
For example:
tffaq-questions.php. line 241.
<a title="" href="?page=tffaq-questions&new=new&cat=<?php echo $cur_category->id?>" class="button-secondary">Add a New Question</a>
Make text Add a New Question translatable.

2. Can you add placeholders for some strings?
https://codex.www.ads-software.com/I18n_for_WordPress_Developers#Placeholders

I am trying to translate you plugin to russian language, but in some cases it’s very hard to do. Please, use placeholders.
For example:
tf-faq.php. line 252.
$subject = $cat->category.' '.__('question','tf-faq');
replace with
$subject = sprintf(__('%s question','tf-faq'), $cat->category);

In this way I can change words positions. This is what I need.

https://www.ads-software.com/extend/plugins/tf-faq/