Merge pull request #166 from NuGet/danliu/gallerystatusreport

Danliu/gallerystatusreport
add ISS clean
add metrics error log fix
fix CR
small fix
Merge pull request #168 from NuGet/issclean

add ISS clean
Merge branch 'master' of https://github.com/NuGet/NuGet.Services.Dashboard into danliu/gallerystatusreport
add one more block for unique package uploads and remove feed.package.list from availability calculation