Implement elasticsearch to skill_senpai and add title filter for lect…

[Pirner]

No description provided.

[Mixermachine]

Thanks for this pull request.
Elasticsearch is definitely needed.

Just some small things:

• Put a final newline at the end of the newly created files. Best practice of PyLint http://pylint-messages.wikidot.com/messages:c0304
• Create a folder under ops/elasticsearch with the configuration files for elasticsearch

Thanks :)