Add a drop-down list to let the user choose the observed oppression

Change the group labels to easily switch between oppressions observable during a meeting:

• sexism
  • MINT
  • cis men
• classism
  • oppressed class
  • oppressor class
• ageism
  • which metrics? child, youngest, oldest, minotiry of the group?
• racism
  • how to name the groups with neutrality?