UTF-8 unescape in makeRequest drops letters that follow escape sequences 
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                 Key: SHINDIG-1235
                 URL: https://issues.apache.org/jira/browse/SHINDIG-1235
             Project: Shindig
          Issue Type: Bug
            Reporter: Thiago Arrais


When the remote server responds with an Unicode UTF-8 escaped string, Shindig 
tries to unescape it before forwarding the response to the client. The unescape 
code, though, drops some letters following the escape sequence. For example, 
the JSON string

{"body": "an\u00e3o"}

that gets transmitted over the wire as the byte sequence `7b 22 62 6f 64 79 22 
3a 20 22 61 6e 5c 75 30 30 65 33 6f 22 7d`, gets forwarded as

{\"body\": \"anã\"} [7b 5c 22 62 6f 64 79 5c 22 3a 20 5c 22 61 6e c3 a3 5c 22 
7d]

when it should have been

{\"body\": \"anão\"} [7b 5c 22 62 6f 64 79 5c 22 3a 20 5c 22 61 6e c3 a3 6f 5c 
22 7d]


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