Index: frontend/node_modules/sockjs/Changelog
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--- frontend/node_modules/sockjs/Changelog	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/sockjs/Changelog	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,291 @@
+0.3.24
+======
+  * Remove excess file from npm package
+
+0.3.23
+======
+  * Fix `uuid` usage
+
+0.3.22
+======
+  * Update `uuid`
+
+0.3.21
+======
+  * Update `faye-websocket` and `websocket-driver` to address DDoS vulnerability #275
+
+0.3.20
+======
+  * Updated `node-uuid` and `coffeescript`
+  * Exclude `examples`, `tests`, and `Makefile` from npm package
+  * Update examples to use latest jQuery and sockjs-client #271
+  * Don't call `res.end` in `writeHead` #266
+  * Pin `websocket-driver` as later versions cause some tests from `sockjs-protocol` to fail
+
+0.3.19
+======
+
+  * Update `node-uuid` version #224
+  * Add `disable_cors` option to prevent CORS headers from being added to responses #218
+  * Add `dnt` header to whitelist #212
+  * Add `x-forwarded-host` and `x-forwarded-port` headers to whitelist #208
+  * Update `sockjs_url` default to latest 1.x target #223
+  * Updated hapi.js example #216
+
+0.3.18
+======
+
+  * Change to using `res.statusCode` instead of manual parsing of `res._header` #213
+  * Update sockjs-protocol filename in README #203
+
+0.3.17
+======
+
+  * Fix usage of undefined `session` in `heartbeat_timeout` #179
+
+0.3.16
+======
+
+  * Fix CORS response for null origin #177
+  * Add websocket ping-pong and close if no response #129, #162, #169
+  * Update sockjs-client version in examples #182
+  * Add koa example #180
+  * Disable raw websocket endpoint when websocket = false #183
+  * Upgrade to faye-websocket 0.10.0 and use proper close code
+  * When connection is aborted, don't delay the teardown
+  * Forward additional headers #188
+  * Add `no-transform` to Cache-Control headers #189
+  * Update documentation about heartbeats #192
+
+
+0.3.15
+======
+
+  * Remove usage of naked '@' function params to be compatible with coffeescript 1.9.0 #175
+
+0.3.14
+======
+
+  * Re-publish to npm because of build issue in 0.3.13
+
+0.3.13
+======
+
+  * Upgrade faye-websocket to 0.9.3 to fix #171
+
+0.3.12
+======
+
+ * Allow Faye socket constructor options to be passed with
+   faye_server_options option to createServer
+ * Fix websocket bad json tests
+ * Upgrade Faye to allow 0.9.*
+
+0.3.11
+======
+
+ * #133 -  only delay disconnect on non-websocket transports
+ * Upgrade Faye to 0.8.0
+
+0.3.10
+======
+
+ * #168 - Add CORS headers for eventsource
+ * #158 - schedule heartbeat timer even if send_buffer is not empty
+ * #96 - remove rbytes dependency
+ * #83 - update documentation for prefix
+ * #163 - add protection to JSON for SWF exploit
+ * #104 - delete unused parameters in code
+ * #106 - update CDN urls
+ * #79 - Don't remove stream listeners until after end so 'close' event is heard
+ * Get rid of need for _sockjs_onload global variable
+ * Use Faye for websocket request validation
+ * Upgrade Faye to 0.7.3
+ * Upgrade node-uuid to 1.4.1
+
+0.3.9
+=====
+
+ * #130 - Set Vary: Origin on CORS requests
+ * Upgrade Faye to 0.7.2 from 0.7.0
+
+
+0.3.8
+=====
+
+ * #118 - Allow servers to specify a base URL in /info
+ * #131 - Don't look up session id undefined
+ * #124 - Small grammar updates for ReadMe
+ * Upgrade Faye to 0.7.0 from 0.4.0
+
+0.3.7
+=====
+
+ * Expose "protocol" on raw websocket connection instance, correctly
+
+0.3.6
+=====
+
+ * When the server closes a connection, make sure the send buffer still
+   gets flushed.
+ * Expose "protocol" on raw websocket connection instance
+ * #105, #109, #113 - expose 'host', 'user-agent', and 'accept-language'
+   headers
+ * Serve SockJS over https CDN by default
+ * Upgrade Faye to 0.4.4 from 0.4.0
+
+0.3.5
+=====
+
+ * #103 - connection.protocol might have been empty on some rare
+   occasions.
+ * #99 - faye-websocket was leaking sockets in "closed" state
+   when dealing with rfc websockets
+
+
+0.3.4
+=====
+
+ * #73 - apparently 'package' is a reserved keyword (use 'pkg' instead)
+ * #93 - Coffescript can leak a variable when the same name is used
+   in catch statement. Let's always use 'x' as the variable in catch.
+ * #76 - decorateConnection could throw an error if remote connection
+   was closed before setup was complete
+ * #90 - Fix "TypeError: 'addListener'" exception (via @pl).
+ * remove 'optionalDependencies' section from package.json,
+   'rbytes' was always optional.
+ * #91 - Fix rare null exception.
+
+
+0.3.3
+=====
+
+ * sockjs/sockjs-protocol#56, #88 Fix for iOS 6 caching POSTs
+
+
+0.3.1
+=====
+
+ * #58 - websocket transport emitted an array instead of a string
+   during onmessage event.
+ * Running under node.js 0.7 caused infinite recursion (Stephan Kochen)
+ * #59 - restrict characters allowed in callback parameter
+ * Updated readme - rbytes package is optional
+ * Updated readme WRT deployments on heroku
+ * Add minimalistic license block to every source file.
+
+
+0.3.0
+=====
+
+ * Sending JSESSIONID cookie is now *disabled* by default.
+ * sockjs/sockjs-protocol#46 - introduce new service
+   required for protocol tests "/cookie_needed_echo"
+ * Initial work towards better integration with
+   "connect" (Stephan Kochen). See discusion:
+       https://github.com/senchalabs/connect/pull/506
+ * More documentation about the Cookie and Origin headers.
+ * #51 - expose "readyState" on connection instance
+ * #53 - expose "protocol" on connection instance
+ * #52 - Some protocols may not emit 'close' event with IE.
+ * sockjs/sockjs-client#49 - Support 'null' origin - aka: allow SockJS
+   client to be served from file:// paths.
+
+
+0.2.1
+=====
+
+ * Bumped "faye-websocket" dependency to 0.4. Updated
+   code to take advantage of introduced changes.
+ * Pinned "node-static" and bumped "node-uuid" dependencies.
+ * Removed "Origin" header list of headers exposed to the user.
+   This header is not really meaningful in sockjs context.
+ * Header "Access-Control-Allow-Methods" was misspelled.
+
+
+0.2.0
+=====
+
+ * #36, #3 - Replace a custom WebSocket server implementation
+   with  faye-websocket-node.
+ * Multiple changes to support SockJS-protocol 0.2.
+    * The session is now closed on network errors immediately
+      (instead of waiting 5 seconds)
+    * Raw websocket interface available - to make it easier
+      to write command line SockJS clients.
+    * Support '/info' url.
+ * The test server got moved from SockJS-client to SockJS-node.
+ * Dropped deprecated Server API (use createServer method instead).
+ * Option `websocket` is now used instead of `disabled_transports`.
+
+
+0.1.2
+=====
+
+ * #27 - Allow all unicode characters to be send over SockJS.
+ * #14 - Make it possible to customize JSESSIONID cookie logic.
+
+
+0.1.1
+=====
+
+ * #32 Expose various request headers on connection.
+ * #30 Expose request path on connection.
+
+
+0.1.0
+=====
+
+ * The API changed, there is now an idiomatic API, modelled on node.js
+   Stream API. The old API is deprecated and there is a dummy wrapper
+   that emulates it. Please do upgrade to the new idiomatic API.
+ * #22 Initial support for hybi13 (stephank)
+ * New options accepted by the `Server` constructor: `log`,
+   `heartbeat_delay` and `disconnect_delay`.
+ * SockJS is now not able to send rich data structures - all data
+   passed to `write` is converted to a string.
+ * #23 `Connection.remoteAddress` property introduced (Stéphan Kochen)
+ * Loads of small changes in order to adhere to protocol spec.
+
+
+0.0.5
+=====
+
+ * #20: `npm submodule sockjs` didn't work due to outdated github
+   path.
+
+
+0.0.4
+=====
+
+ * Support for htmlfile transport, used by IE in a deployment
+   dependent on cookies.
+ * Added /chunking_test API, used to detect support for HTTP chunking
+   on client side.
+ * Unified code logic for all the chunking transports - the same code
+   is reused for polling versions.
+ * All the chunking transports are closed by the server after 128K was
+   send, in order to force client to GC and reconnect.
+ * Don't distribute source coffeescript with npm.
+ * Minor fixes in websocket code.
+ * Dropped jQuery dependency.
+ * Unicode encoding could been garbled during XHR upload.
+ * Other minor fixes.
+
+
+0.0.3
+======
+
+ * EventSource transport didn't emit 'close' event.
+
+
+0.0.2
+=====
+
+ * By default set JSESSIONID cookie, useful for load balancing.
+
+
+0.0.1
+=====
+
+ * Initial release.
