Compute simple user statistics during course passing

[IgorNikiforov]

There is an existing script that calculate user names and ids.

Based on that script logic we can count simple user statistic on course and implement a new py script.

The result file should contain:

• user_id,
• user_name,
• total_events_generated,
• total_sessions,
• total_pages_visited,
• total_amount_of_comments_in_forum,
• etc.

Please, feel free to add more information into the result table if there is an idea.

Based on the result table we will see the numbers and will try to made a corrections.

[mandarinSh]

This issue is resolving by PR#16

[mandarinSh]

PR#16 is merged.