Cleanup lints identified by eslint

Some files were omitted in the .eslintignore, left as an exercise to the
reader.

We probably want to reduce amount of globals overall and use proper es
modules.

proxy/spec/snowflake.spec.js

@@ -1,3 +1,5 @@
+/* global expect, it, describe, spyOn, Snowflake, Config, UI */
+
 /*
 jasmine tests for Snowflake
 */
@@ -7,34 +9,34 @@ class PeerConnection {
   setRemoteDescription() {
     return true;
   }
-  send(data) {}
-};
+  send() {}
+}
 
-class SessionDescription {};
+class SessionDescription {}
 SessionDescription.prototype.type = 'offer';
 
 class WebSocket {
   constructor() {
     this.bufferedAmount = 0;
   }
-  send(data) {}
-};
+  send() {}
+}
 WebSocket.prototype.OPEN = 1;
 WebSocket.prototype.CLOSED = 0;
 
 var log = function() {};
 
-var config = new Config;
+var config = new Config();
 
-var ui = new UI;
+var ui = new UI();
 
 class FakeBroker {
   getClientOffer() {
-    return new Promise(function(F, R) {
+    return new Promise(function() {
       return {};
     });
   }
-};
+}
 
 describe('Snowflake', function() {