Travis fix: restored travis. Can't do coverage for now.

Because travis worker resources are limited.
Fix: need to mock live_status_handle_request to iter over generator.

missed mock_livestatus.py previously.

loading ...done.
HelloWorld, datetime is dimanche 2 novembre 2014, 16:42:04 (UTC-0500)
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Fix: Misc last fixes.

+ livestatus showheader rule for 'json' or 'python' is different than one of 'csv' format.
  breaked a test: test_check_hint_hosts_by_host

+ separators are encoded as their ord() values in the request.
  Need to chr(int(..)) them.

+ Fix: CSV needs to quotes fields if they contain the field separator.
  Use csv lib to encore each row separatedly.
Merge pull request #40 from shinken-monitoring/fix_generator_response_and_tests

Fix :  generator response and tests