Merge tag 'v0.5.3' into experimental

Version 0.5.3
Restored experimental info
ProfileController: Permit http_request_queue_size

[Issue Arachni/arachni#468]
Profile: Added the http_response_max_size option

[Issue Arachni/arachni#468]
Profile::RPC_OPTS: Removed obsolete :audit_include_vectors
bundle update arachni
bundle update arachni
bundle update arachni
bundle update arachni
bundle update ffi
bundle update arachni
bumped version to 0.5.4
Updated Arachni to v1.0.3
Merge branch 'release/v0.5.4'