updated styles on tierDetail page and how the positions are drawn on the myTeamSidebar page
slightly shifted how empty roster spots are drawn in myTeamSidebar
minor style changes
tiers can now be rolled back so they can be run again, rosters are also now updated to undo moves from a tier when it is deleted
Merge branch 'master' of github.com:qscripter/tiered-fantasy-draft

Pulling changes to README from github