Ajout de ports pour flask

www/py-werkzeug/pkg/DESCR

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+Werkzeug started as a simple collection of various utilities for WSGI
+applications and has become one of the most advanced WSGI utility
+modules. It includes a powerful debugger, full featured request and
+response objects, HTTP utilities to handle entity tags, cache control
+headers, HTTP dates, cookie handling, file uploads, a powerful URL
+routing system and a bunch of community contributed addon modules.
+
+Werkzeug is unicode aware and doesn't enforce a specific template
+engine, database adapter or anything else. It doesn't even enforce
+a specific way of handling requests and leaves all that up to the
+developer.
+
+Werkzeug is most useful for end user applications which should work on
+as many server environments as possible (such as blogs, wikis, bulletin
+boards, etc.).