[FR] option to remove 'Server' from resp header

[mrx23dot]

Just discovered there is a huge information leak in the Response Header:

Server: Werkzeug/0.0.1 Python/3.1.7

Please add option to drop this, or maybe to modify it.

Something like

@app.after_request
def add_header(response):
response.headers['Server'] = 'dummy'
return response