fix HER-2063 - omit port in Host request header when it is default for the scheme
Merge pull request #37 from nlevitt/her-2063

fix HER-2063 - omit port in Host request header when it is default for t...
Merge branch 'master' into umbra
AMQPUrlReceiver - ack amqp messages, get rid of misguided thread starting infinite consumers
FetchHTTPRequest - include CrawlURI.getData().get("customHttpRequestHeaders"), if any, in http request
AMQPPublishProcessor - annotate urls sent to AMQP; set special fetch status; add default amqpUri; replace queueName setting with exchange and routingKey, which seem to be what are needed; avoid sending urls that were received from AMQP, and robots.txt urls; set content-type of amqp message to application/json, which umbra seems to need