Updated sponsors page and individual pages for each sponsor.

Changed logo for KorteQ on sponsors page
Changed text for multiple on sponsors page
Changed links on sponsors page to support multiple
Added extra link for chelsea-academy.org as well as chelsea-academy-foundation.org
  on Chelsea Academy's sponsorship section
Added Read More pages for:
  Chelsea Academy
  Alliants
  KorteQ
Added new template for "Read More" pages.