Adds a proper turn#index route
Rewrites parScore as "shooting"
Adds formattedShooting computed property
Adds scorecardId to turn serializer
Adds turns controller and holeNumber property

This works because all turns should be the same
Rewrites turns template
Fixes up the template a bit
First lazy crack at navigation actions

A very bad way to do this, to be hopefully fixed in the next commit by
nesting our resources
Uses Ember nesting to refactor / reuse round routes
Cleans up previousHole and nextHole actions
Renames file from round to round_index_controller
Fixes bugs in property watchers
Adds a few navigation links
Fixes bug when searching for a hole
Adds actions for adding, subtracting score; changing pars
Fixes bug concerning ordering of turns
Reconfigures hound
Satisfies hound
Reworks isLastHole
Updates max score for subtractOne