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