Fix icons on session details page
Fix icons on session details page

dotnet-presentations/aspnetcore-app-workshop,anurse/ConferencePlanner,jongalloway/aspnetcore-app-workshop,csharpfritz/aspnetcore-app-workshop,anurse/ConferencePlanner,anurse/ConferencePlanner,jongalloway/aspnetcore-app-workshop,dotnet-presentations/aspnetcore-app-workshop,dotnet-presentations/aspnetcore-app-workshop,csharpfritz/aspnetcore-app-workshop,dotnet-presentations/aspnetcore-app-workshop,csharpfritz/aspnetcore-app-workshop,csharpfritz/aspnetcore-app-workshop