added restart button to ACP (!!)

src/meta.js

@@ -336,4 +336,12 @@ var fs = require('fs'),
 			db.getFileName(callback);
 		}
 	};
+
+	Meta.restart = function() {
+		if (process.send) {
+			process.send('nodebb:restart');
+		} else {
+			winston.error('[meta.restart] Could not restart, are you sure NodeBB was started with `./nodebb start`?');
+		}
+	};
 }(exports));

src/socket.io/admin.js

@@ -31,6 +31,10 @@ SocketAdmin.before = function(socket, next) {
 	});
 };
 
+SocketAdmin.restart = function(socket, data, callback) {
+	meta.restart();
+};
+
 /* Topics */
 
 SocketAdmin.topics = {};