Added new classes for pulling NemesisHistory. Retrofitted existing GetPlayerDetails method to use this. One minor issue remeains with prefetching.
added migration for adding PreviousNemesis right on Player for quick access. Still need to update NemesisRecalculator.
now shows the previous Nemesis on the gaming group details page.
removed all unused imports courtesy of Resharper.
Resharper removed a bunch of using statementns that should not have been
deleted"

This reverts commit 855ee5069018d3e53de257e1aab24b21c68ee634.
resharper removed a bunch of usings that should not have been removed so
reverting.

This reverts commit 5744f10692e6bbaceb98bb98e35f8c931108e452.
now shows the previous Nemesis on the gaming group details page.
Merge branch 'master' into more-ui-styling