Custom headers description + Basic Authentication (#1482)
Custom headers description + Basic Authentication (#1482)

Added custom headers setting description plus instructions on how to use them to setup HTTP Basic Authentication when a identity provider requires it.
khorne3/docs,khorne3/docs,khorne3/docs,jeffreylees/docs,Catografix/docs,jeffreylees/docs,auth0/docs,yvonnewilson/docs,sandrinodimattia/docs,yvonnewilson/docs,hamzawi06/docs,Annyv2/docs,Annyv2/docs,Annyv2/docs,Catografix/docs,yvonnewilson/docs,jeffreylees/docs,sandrinodimattia/docs,sandrinodimattia/docs,hamzawi06/docs,auth0/docs,hamzawi06/docs,auth0/docs,Catografix/docs