Py-swagger-ui

Update to address a bug in [swagger-js](https://github.com/swagger-api/swagger-js) where `schemes` are sometimes not honored.

Fixed an issue where query parameters without default values were being shown as `undefined`.

Minor update to Swagger-UI that brings better handling of XSS vulnerabilities using the excellent [sanitize-html](https://www.npmjs.com/package/sanitize-html) project.

Small fix to address overly-aggressive escaping of model signatures 2350.

While at it...
- Added `composer.json` file 2347
- Added Catalan translation 2351

Please see detailed release notes [here](https://github.com/swagger-api/swagger-ui/releases/tag/v2.2.1)!

A new version of swagger-ui has been released, and contains major functionality enhancements as well as a ton of performance fixes. Oh, we fixed some bugs, too.

Upgrade notes!

Please note! There are updates in the parent `index.html` which are _required_ for using 2.2.1. Please compare the included libraries from your container with those in the [swagger-ui distribution](https://github.com/swagger-api/swagger-ui/blob/v2.2.1/dist/index.html)!

New features
- Integrated authentication! Now your `basic auth`, `apiKey`, OAuth 2.0 Implicit security definitions are automatically rendered in the UI 1923, 1922, 1889
- Updated Handlebars! Now using Handlebars 4.0.0 2306
- Highlight pack updated 2235
- Security fixes prevent XSS injections 1866, 1865, 1864, 1863, 1617, 1154, 830

Enhancements
- Speed improvements with large spec files, references 2292, 2198
- Better checking for invalid specs 2258
- File upload improvements 2251
- Updated `curl` file upload command 2178
- Added filename in download headers 1991
- More translations 2066
- OAuth `redirect_url` added 2056
- Latest swagger-js 2244, 2223
- `:port` removed from curl sample 2236

Bug Fixes
- Fixed issue with `$ref` and external files 2304
- `Content-Type` header sometimes not sent in request 2242
- Arrays of primitives in `formData` now correctly sent
- Authorize bugs: cancel button (2238), logout button 2193,
- `OPTIONS` javascript issue resolved 2207
- XML rendering issues 2191, 2167, 2077, 2067, 1982, 1931, 1918, 1901
- Boolean parameters causing rendering issues 2190
- OAuth scopes 2150
- IE issues 2144, 2063, 2002
- Basic auth now works with no password(?) 2114
- Curl makes funny characters 2113, 1978
- Auth sends headers corectly 2075
- Gulp tasks updated 2227
- Some cases have wrong produces/consumes headers 2042
- Title not used as model name by default 2029
- Rendering fails with missing `supportedSubmitMethods` 1949
- Rendering nested refs 1943, 1859
- Enum values not displayed in response class 1907
- Open external docs in new tab/window 1899

Please share your feedback, issues, chocolates as you see fit.

A new version of swagger-ui has been released, and contains fixes, enhancements, and unicorns.

Enhancements
- Updated swagger-client to 2.1.10, allowing better support for references, composition, rendering of complex models
- Added translation files for French, Italian, Japanese, Polish, Russian, Turkish (1631, 1717, 1725, 1843, 1844, 1559). Also more translation elements (1521)
- A JSON editor has been added to make it easier to edit and supply JSON payloads (1589)
- Better OAuth support (1648)
- Client credentials flow (1825)
- LESS refactoring makes it much easier to edit style (1756)

Deprecations
- Please note that rendering in the swagger-js client will be removed in 2.2.x releases (see 1248). These methods will be removed, and are being logged to console in the mean time.