Fix: search_host_and_dispatch() - Warning would not happen if receiver
Added receivers to brokers conf

Conflicts:
	shinken/objects/realm.py
Brokers can now get broks from receivers
external_command now generates unknown_check_result_brok
unknown_check_result broks are now enabled only if accept_passive_unknown_check_results is True
Added accept_passive_unknown_check_results to arbiter documentation
Fix: accept_passive_unknown_check_results is now optional
Fix: getattr would fail on receiver
You may now submit passsive check results for configured hosts but unconfigured services
Schedulers can now receive passive host_check results for unconfigured hosts
Added tests for unknown_[host|service]_check_result broks
Split perfdatas from output in unknown_check_result broks
time_stamp in test_unknown_check_result broks is now int
Merge pull request #1232 from ReAzem/passive_unknown_rebase

Feature: Receivers can now receive passive check results for unconfigured hosts