Fix exception in options.js on first run

Fixes #22 Uncaught ReferenceError: getRandomBytes is not defined
options.js:41

js/crypto.js

@@ -2,7 +2,7 @@
 var crypto_tests = {};
 
 window.crypto = (function() {
-	function getRandomBytes(size) {
+	crypto.getRandomBytes = function(size) {
 		//TODO: Better random (https://www.grc.com/r&d/js.htm?)
 		try {
 			var buffer = new ArrayBuffer(size);
@@ -60,7 +60,7 @@ window.crypto = (function() {
 	var privToPub = function(privKey, isIdentity) { return crypto_tests.privToPub(privKey, isIdentity); }
 
 	crypto_tests.createNewKeyPair = function(isIdentity) {
-		return privToPub(getRandomBytes(32), isIdentity);
+		return privToPub(crypto.getRandomBytes(32), isIdentity);
 	}
 	var createNewKeyPair = function(isIdentity) { return crypto_tests.createNewKeyPair(isIdentity); }
 

js/options.js

@@ -38,8 +38,8 @@ $('#number').on('change', function() {//TODO
 });
 
 var single_device = false;
-var signaling_key = getRandomBytes(32 + 20);
-var password = btoa(getString(getRandomBytes(16)));
+var signaling_key = window.crypto.getRandomBytes(32 + 20);
+var password = btoa(getString(window.crypto.getRandomBytes(16)));
 password = password.substring(0, password.length - 2);
 
 $('#init-go-single-client').click(function() {

options.html

@@ -53,6 +53,7 @@
 	<script type="text/javascript" src="js-deps/Long.min.js"></script>
 	<script type="text/javascript" src="js-deps/ByteBuffer.min.js"></script>
 	<script type="text/javascript" src="js-deps/ProtoBuf.min.js"></script>
+	<script type="text/javascript" src="js/crypto.js"></script>
 	<script type="text/javascript" src="js/api.js"></script>
 	<script type="text/javascript" src="js/helpers.js"></script>
 	<script type="text/javascript" src="js/options.js"></script>