updater dev mode; reduce sockets msg count

routes/shepherd.js

@@ -379,6 +379,8 @@ shepherd.updateAgama = function() {
     localFile: rootLocation + 'patch.zip',
     onProgress: function(received, total) {
       const percentage = (received * 100) / total;
+      if (Math.floor(percentage) % 5 === 0 ||
+          Math.floor(percentage) % 10 === 0) {
         console.log('patch ' + percentage + '% | ' + received + ' bytes out of ' + total + ' bytes.');
         cache.io.emit('patch', {
           'msg': {
@@ -390,6 +392,7 @@ shepherd.updateAgama = function() {
           }
         });
       }
+    }
   })
   .then(function() {
     remoteFileSize('https://github.com/pbca26/dl-test/raw/master/patch.zip', function(err, remotePatchSize) {
@@ -402,7 +405,14 @@ shepherd.updateAgama = function() {
         console.log('extracting contents');
 
         const zip = new AdmZip(rootLocation + 'patch.zip');
-        zip.extractAllTo(/*target path*/rootLocation, /*overwrite*/true);
+
+        if (shepherd.appConfig.dev) {
+          if (!fs.existsSync(`${rootLocation}/patch`)) {
+            fs.mkdirSync(`${rootLocation}/patch`);
+          }
+        }
+
+        zip.extractAllTo(/*target path*/rootLocation + (shepherd.appConfig.dev ? '/patch' : ''), /*overwrite*/true);
         // TODO: extract files in chunks
         cache.io.emit('patch', {
           'msg': {