Make translate.rb plugin fallback to English by default

Display English content in outdated translated templates when this doesn't cause too much issues

_templates/support-bitcoin.html

@@ -11,20 +11,12 @@ id: support-bitcoin
 <h2><img class="titleicon" src="/img/ico_network.svg" alt="Icon" />{% translate node %}</h2>
 <p>{% translate nodetxt %}</p>
 
-{% case page.lang %}
-{% when 'ar' or 'bg' or 'fa' or 'id' or 'nl' or 'pl' or 'tr' or 'zh_TW' %}
-{% else %}
 <h2><img class="titleicon" src="/img/ico_mining.svg" alt="Icon" />{% translate mining %}</h2>
 <p>{% translate miningtxt %}</p>
-{% endcase %}
 
 <h2><img class="titleicon" src="/img/ico_translate.svg" alt="Icon" />{% translate translate %}</h2>
 <p>{% translate translatetxt %}</p>
-{% case page.lang %}
-{% when 'ar' %}
-{% else %}
 <p><a href="https://www.transifex.com/projects/p/bitcoin/">Bitcoin Core</a> - <a href="https://www.transifex.com/projects/p/bitcoinorg/">Bitcoin.org</a> - <a href="https://en.bitcoin.it/wiki/Bitcoin.it_Wiki">Bitcoin Wiki</a> - <a href="https://www.transifex.com/projects/p/bitcoin-wallet/">Bitcoin Wallet (Android)</a> - <a href="http://translate.multibit.org/">MultiBit</a> - <a href="http://crowdin.net/project/electrum">Electrum</a> - <a href="https://github.com/hivewallet/hive-osx/wiki/I18n-guide">Hive</a></p>
-{% endcase %}
 
 <h2><img class="titleicon" src="/img/ico_conf.svg" alt="Icon" />{% translate develop %}</h2>
 <p>{% translate developtxt %}</p>
@@ -33,7 +25,6 @@ id: support-bitcoin
 <p>{% translate donationtxt %}</p>
 
 {% case page.lang %}
-{% when 'ar' or 'fa' or 'pl' or 'zh_TW' %}
 {% when 'bg' or 'id' or 'nl' or 'tr' %}
 <h2><img class="titleicon" src="/img/ico_law.svg" alt="Icon" />{% translate foundation %}</h2>
 <p>{% translate foundationtxt %}</p>