[#15] Genericize Components

[luetkemj]

Goal was to refactor the monster container into generic pieces that
could be reused. This was accomplished by creating a definitionList
component for semantic markup of stats, abilities, and actions as well
as a component for ability scores that will be used heavily.

• create ability score component
• create definition list component
• add fragments utils to build semantic dl markup
• add create fragment addon to dependencies and update requirements
• refactor monster-details to use new components
• update list component to be more generic and not depend on _id for
  keys
• component tests
• typography function for reuse and to bypass compose limitations
• add ability score abrv to monsterUI model