Localizing a number of labels.
Added Instruments to Track Details screen.
Modified Track Details screen to only show performer credits with at least an Agent or Alternate Agent Name specified.
Reversed the display of Performer Credits.
Updated Track Details screen to render distinct agents and their instruments in a semi-colon separated list.
Implementing ToString because it's good practice and helps with debugging.
Turned the Track Artist into an hyperlink if it is an Agent.
Extracted Credits part to its own view and updated Album Role rendering.

This update will render a list of roles per agent.
Merge branch 'feature/WR8' into develop