Convert skills data structure

[mkimberlin]

I want to convert our data to use the same structure as Athena so that the two can be kept in sync.

Acceptance Criteria

• A separate, nullable Boolean property on the MemberSkill entity is created to represent interested
• Adjust the UI to make Interested in learning or doing more with this skill? a separate prompt and toggle on the bio, bound to the new interested property
• Migrations have been created to adjust the database to contain the new property
  • Migrations correctly migrate convert any member skill entries with a 1 ("Interested") skill levels to a TRUE value in the new interested property
• The slider on the user profile that represents skill levels should be converted to be four radio buttons: 0 - None, 1 - Novice, 2 - Practitioner, 3 - Expert
• Migrations have been created to convert any member skill entry skill levels as follows:
  • 1 (Interested) -> TRUE in the interested column, 0 (None) in the skill level column
  • 2 (Novice) -> 1 (Novice) in the skill level column
  • 3 (Intermediate) -> 2 (Practitioner) in the skill level column
  • 4 (Advanced) -> 2 (Practitioner) in the skill level column
  • 5 (Expert) -> 3 (Expert) in the skill level column