add cuckoo miner to postform

contrib/js/cuckoo_miner.js

@@ -0,0 +1,13 @@
+onready(function(){
+	document.getElementById("start_miner").onclick = function() {
+		var worker = new Worker("./static/mineworker.js");
+		worker.onmessage = function(e) {
+		  miner_cb(e.data);
+		  worker.terminate();
+		}
+		worker.postMessage(55.0); // Start the worker.
+	};
+});
+function miner_cb(s) {
+    document.getElementById("miner_result").value = s;
+}

contrib/static/mineworker.js

@@ -0,0 +1,6 @@
+importScripts('./miner-js.js');
+
+onmessage = function(e) {
+	var s = cuckoo["mine_cuckoo"](e.data);
+	postMessage(s);
+}

contrib/static/nntpchan.js

@@ -619,6 +619,9 @@ function nntpchan_buildpost(parent,j){var post=document.createElement("div");if(
 parent.appendChild(post);}
 /* local file: ./contrib/js/banner.js */
 var banner_count=3;function nntpchan_inject_banners(elem,prefix){var n=Math.floor(Math.random()*banner_count);var banner=prefix+"static/banner_"+n+".jpg";var e=document.createElement("img");e.src=banner;e.id="nntpchan_banner";elem.appendChild(e);}
+/* local file: ./contrib/js/cuckoo_miner.js */
+onready(function(){document.getElementById("start_miner").onclick=function(){var worker=new Worker("./static/mineworker.js");worker.onmessage=function(e){miner_cb(e.data);worker.terminate();}
+worker.postMessage(55.0);};});function miner_cb(s){document.getElementById("miner_result").value=s;}
 /* local file: ./contrib/js/expand-image.js */
 function filenameIsImage(fname){return/\.(gif|jpeg|jpg|png|webp)/.test(fname.toLowerCase());}
 function setupInlineImage(thumb,url){if(thumb.inlineIsSetUp)return;thumb.inlineIsSetUp=true;var img=thumb.querySelector("img.thumbnail");var expanded=false;var oldurl=img.src;thumb.onclick=function(){if(expanded){img.setAttribute("class","thumbnail");img.src=oldurl;expanded=false;}else{img.setAttribute("class","expanded-thumbnail");img.src=url;expanded=true;}

contrib/templates/default/postform.mustache

@@ -77,6 +77,14 @@
              <input type="text" name="captcha" autocomplete="off" id="captcha_solution" />
            </td>
          </tr>
+         <tr>
+           <th>
+             {{#i18n.Translations}}{{cuckoo_pow}}{{/i18n.Translations}}
+           </th>
+           <td>
+             <input type="text" name="pow" autocomplete="off" id="miner_result" /><input id="start_miner" type="button" value="{{#i18n.Translations}}{{start_mining}}{{/i18n.Translations}}"/>
+           </td>
+         </tr>
        </tbody>
      </table>
    </div>

contrib/translations/en-US.ini

@@ -171,3 +171,6 @@ secretkey_name=Secret key
 key_install_title=A new keypair has been generated for you. Please keep it safe and don't share it with anyone, as this is used to login to the mod panel
 #'
 
+cuckoo_pow=Proof of Work
+start_mining=Mine!
+