Add "Additional Resources" subsection in devel-docs (thanks @cbeams @harding @instagibbs)

_less/ie.css

@@ -190,6 +190,11 @@ body{
 	border-top:expression(this.parentNode.className=='resourcesorg'&&this.parentNode.getElementsByTagName('DIV')[0]!=this?'1px solid #e0e0e0':'0');
 }
 
+.resourcesmore div{
+	zoom:1;
+	display:inline;
+}
+
 .docreference a{
 	zoom:1;
 	display:inline;

_less/screen.less

@@ -1018,6 +1018,29 @@ table td,table th{
 	bottom:-6px;
 }
 
+.resourcesmore{
+	text-align:center;
+	margin-top:40px;
+}
+.resourcesmore div{
+	display:inline-block;
+	text-align:left;
+	padding:20px 40px;
+	border-top:1px solid #e0e0e0;
+	border-left:1px solid #e0e0e0;
+	border-right:1px solid #e0e0e0;
+}
+.resourcesmore div h2{
+	text-align:center;
+	margin-bottom:25px;
+}
+.resourcesmore div p{
+	font-size:115%;
+	margin:6px 0;
+	padding-left:24px;
+	background:url(/img/mini_ico_link.svg) no-repeat 0 4px;
+}
+
 .chatbox{
 	text-align:center;
 }
@@ -1949,6 +1972,16 @@ h2 .rssicon{
 	.resourcesorg div{
 		border-top:0;
 	}
+	.resourcesmore{
+		margin-top:0;
+	}
+	.resourcesmore div{
+		padding:0;
+		border:0;
+	}
+	.resourcesmore div h2{
+		text-align:left;
+	}
 	.download{
 		text-align:left;
 	}

_templates/development.html

@@ -11,17 +11,16 @@ id: development
 
 <h2>{% translate spec %}</h2>
 <p>{% translate spectxt %}</p>
+{% case page.lang %}
+{% when 'ar' or 'bg' or 'de' or 'es' or 'fa' or 'fr' or 'hu' or 'id' or 'it' or 'nl' or 'pl' or 'pt_BR' or 'ro' or 'ru' or 'sv' or 'tr' or 'zh_CN' or 'zh_TW' %}
 <ul>
-  {% case page.lang %}
+  <li><a href="/en/developer-documentation">Developer Documentation</a></li>
-  {% when 'ar' or 'bg' or 'de' or 'es' or 'fa' or 'fr' or 'hu' or 'id' or 'it' or 'nl' or 'pl' or 'ru' or 'tr' or 'zh_CN' or 'zh_TW' %}
-  <li>{% translate speclinkguide development en %}</li>
-  {% else %}
-  <li>{% translate speclinkguide %}</li>
-  {% endcase %}
   <li>{% translate speclink1 %}</li>
   <li>{% translate speclink2 %}</li>
   <li>{% translate speclink3 %}</li>
 </ul>
+{% else %}
+{% endcase %}
 
 <h2>{% translate coredev %}</h2>
 <ul>

_translations/en.yml

@@ -131,12 +131,8 @@ en:
     title: "Development - Bitcoin"
     pagetitle: "Bitcoin development"
     summary: "Find more information about current specification, software and developers."
-    spec: "Specification"
+    spec: "Documentation"
-    spectxt: "If you are interested in learning more about the technical details of Bitcoin, it is recommended you start with these documents."
+    spectxt: "If you are interested in learning more about the technical details of Bitcoin and how to use existing tools and APIs, it is recommended you start by exploring the <a href=\"/en/developer-documentation\">developer documentation</a>."
-    speclinkguide: "<a href=\"/en/developer-documentation\">Developer documentation</a>"
-    speclink1: "<a href=\"/bitcoin.pdf\">Bitcoin: A Peer-to-Peer Electronic Cash System</a>"
-    speclink2: "<a href=\"https://en.bitcoin.it/wiki/Protocol_rules\">Protocol rules</a>"
-    speclink3: "<a href=\"https://en.bitcoin.it/wiki/Category:Technical\">Bitcoin Wiki</a>"
     coredev: "Core developers"
     disclosure: "Responsible disclosure"
     disclosuretxt: "If you find a vulnerability related to Bitcoin, non-critical vulnerabilities can be emailed in English to any of the core developers or sent to the private bitcoin-security mailing list listed above. An example of a non-critical vulnerability would be an expensive-to-carry-out denial of service attack. Critical vulnerabilities that are too sensitive for unencrypted email should be sent to one or more of the core developers, encrypted with their PGP key(s)."

en/developer-documentation.md

@@ -72,3 +72,12 @@ title: "Developer Documentation - Bitcoin"
     </div>
   </div>
 </div>
+
+<div class="resourcesmore"><div>
+  <h2><img src="/img/ico_wiki.svg" class="titleicon" alt="Icon">Additional resources</h2>
+  <p><a href="/bitcoin.pdf">Bitcoin: A Peer-to-Peer Electronic Cash System</a> - Satoshi Nakamoto</p>
+  <p><a href="https://github.com/bitcoin/bips#readme">Bitcoin Improvement Proposals</a> - GitHub</p>
+  <p><a href="http://enetium.com/resources/Bitcoin.pdf">Bitcoin Protocol Specification (working paper)</a> - Krzysztof Okupski</p>
+  <p><a href="https://bitcoinj.github.io/#documentation">Bitcoinj Developer Documentation</a> - bitcoinj.org</p>
+  <p><a href="https://en.bitcoin.it/wiki/Category:Technical">Technical Pages</a> - Wiki</p>
+</div></div>