Allow dot and hyphen in Profiler's URL

ProfileOutputServlet sanitizes the input URL but fails when the query string contains dot or hyphen. These are valid characters for the hostname.

Example URL part:

/prof-output/async-prof-pid-122466-cpu-1.svg?host=myhost-1.example.com&port=16010 

In this case the user gets the following error message:

HTTP ERROR: 500
Problem accessing /prof-output/async-prof-pid-122466-cpu-1.svg. Reason:
    java.lang.RuntimeException: Non-alphanumeric data found in input, aborting.
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