Allowed admins to change picks for users
Updated pick index for Admins
Added authorize_edit method and before_action. Tweaked edit and update methods
Fixed leaderboard methods in user.rb
Fixed edit pick link in _game_tr.html.erb
Added pick_resource to _form partial, replaced @game with game variable
Added pick_resource to render call, improved back button link for better workflow
Added correct edit pick path to pick index
Added pick_resource to new.html.erb
Reduced number of picks routes