Move frontend tests out of zerver/tests/.

This fixes an unfortunate bug where the backend tests in
zerver/tests.py were not being run automatically, and also makes these
a bit easier to find.

frontend_tests/casperjs/samples/multirun.js

@@ -0,0 +1,59 @@
+/*jshint strict:false*/
+/*global CasperError console phantom require*/
+
+var casper = require("casper").create({
+    verbose: true
+});
+
+var countLinks = function() {
+    return document.querySelectorAll('a').length;
+};
+
+var suites = [
+    function() {
+        this.echo("Suite 1");
+        this.start("http://google.com/", function() {
+            this.echo("Page title: " + (this.getTitle()));
+        });
+        this.then(function() {
+            this.echo((this.evaluate(countLinks)) + " links");
+        });
+    }, function() {
+        this.echo("Suite 2");
+        this.start("http://yahoo.com/", function() {
+            this.echo("Page title: " + (this.getTitle()));
+        });
+        this.then(function() {
+            this.echo((this.evaluate(countLinks)) + " links");
+        });
+    }, function() {
+        this.echo("Suite 3");
+        this.start("http://bing.com/", function() {
+            this.echo("Page title: " + (this.getTitle()));
+        });
+        this.then(function() {
+            this.echo((this.evaluate(countLinks)) + " links");
+        });
+    }
+];
+
+casper.start();
+
+casper.then(function() {
+    this.echo("Starting");
+});
+
+var currentSuite = 0;
+
+var check = function() {
+    if (suites[currentSuite]) {
+        suites[currentSuite].call(this);
+        currentSuite++;
+        casper.run(check);
+    } else {
+        this.echo("All done.");
+        this.exit();
+    }
+};
+
+casper.run(check);