credits section for both Release pages & Song pages

[alxndr]

h/t to Atom for the idea

...each song has specific instrument credits in most cases. ...have them just be the same page with lyrics and top and then credits listed below any credits that are for the WHOLE album can be listed under the album description. any credits that are specific to each song can be listed under the lyrics on that song page... ...all credits should be listed under the song/lyrics page even if we are repeating the same credits that apply across the whole album; that way the description page for the album stays cleaner.. and all the credits are neatly outa the way tucked under the lyrics writer credits could be listed just under the title of the song performer/production credits at the very bottom after all the lyrics

[alxndr]

done as part of #90