Fix imports for yara.

The AnalysisConfig import isn't used but the class was also moved to
another file so it started throwing errors.

Also removed the global import in favor of specifically importing what
we need for the Connector.
Merge pull request #51 from crits/analysis_results

Fix imports for yara.
Fix triage with yara.
Merge pull request #55 from crits/yara_triage

Fix triage with yara.