Create stats in a new menu for participatory spaces

[microstudi]

• Each participatory space should have a new sub-menu with the word "Insights" where to access stats related to that space only.
• Page visualization should show a table for a given metric (Participants, Proposals created, Proposals supported (voted), Coments, Budget votes) with 2 axis (X and Y) like this:
• The header must allow to choose:
  • The metric (participants, votes, etc)
  • The X axis (Gender, age span)
  • The Y axis (Age span, gender)
• Add a configuration option in the module to specify which values are allowed in the X axis and the Y axis (for instance, we don't want to allow admins to use the phone number as a value for an axis)