History: Fix question url

The name of the variable should be round_sessions “round_session”
Refactor question to round_sessions in History

Change the reference to round_sessions instead of questions to clarify
the objects handled.
Use question_id instead of just id to generate the links to the question
page.
Fix: align the practice footer
Practice: hide the timer
History: refactor the header
Merge pull request #91 from joanrm20/master

Maua client fix and improvements.
History: Refactor the variable for round sessions
Merge branch 'mlopez-firstfactory-master'