Move ADT plugin to the ADT help doc and combine the three setup guides into one page that is dynamic based on a URL parameter. Change-Id: If8a8855bdb8e8ec9b0eefedd35ae24ea60497741
Change-Id: I05db9daa6b9b96fef2debabdf35bcbe169fed007
Change-Id: I59d3113d4caf937b13e10c50618a37ae86d4ae55