Make usage of 2-word Address Book consistent across website, except preserve old blog posts as is

i2p2www/pages/site/about/software.html

@@ -34,13 +34,13 @@ SusiMail is bridged so it can send and receive email from the internet as well.
 Occasionally you may see some services like Gmail classifying it as spam, which 
 you can correct in your Internet email service providers settings.{%- endtrans %}</p>
 <p>{% trans bittorrent=site_url('docs/applications/bittorrent') -%}<strong><a href="{{ bittorrent }}">I2PSnark</a></strong>: Snark is an I2P network only BitTorrent client. It never makes a connection to a peer over any other network.{%- endtrans %}</p>
-<p>{% trans addressbook=site_url('docs/naming') -%}<strong><a href="{{ addressbook }}">The AddressBook</a></strong>: This is a locally-defined list of 
+<p>{% trans addressbook=site_url('docs/naming') -%}<strong><a href="{{ addressbook }}">The Address Book</a></strong>: This is a locally-defined list of 
 human-readable addresses ( ie: i2p-projekt.i2p) and corresponding I2P addresses.(udhdrtrcetjm5sxzskjyr5ztpeszydbh4dpl3pl4utgqqw2v4jna.b32.i2p) It integrates with other applications to 
 allow you to use those human-readable addresses in place of those I2P 
 addresses. It is more similar to a hosts file or a contact list than a network 
 database or a DNS service. There is no recognized global namespace, you decide 
 what any given .i2p domain maps to in the end.{%- endtrans %}</p>
-<p><strong>The QR Code Generator</strong>: Besides the Addressbook, I2P 
+<p><strong>The QR Code Generator</strong>: Besides the Address Book, I2P 
 addresses can be shared by converting them into QR codes and scanning them with 
 a camera. This is especially useful for Android devices.</p>
 <p>{% trans i2ptunnel=site_url('docs/api/i2ptunnel') -%}<strong><a href="{{ i2ptunnel }}">I2P Hidden Services Manager</a></strong> This is a general-purpose