start walls with more pleasing colors releated to xpos
added settings dict/file. settings file is generated if not found. initial settings:
    "observer_points_per_second":200.,
    "goal_height":600,
    'goal_thickness':120,
    'airhole_xnum':22,
    'airhole_radius':60,
    'enable_particles':1,
    'volume_multi':.85,
    'puck_max':2,
    'paddle_max':2
add setings for vortex size,power and static
move observer panel slightly away from edge of screen
color goals to player color
add color to ensure startup (avoiding a crash)
change style of goals slightly
lerp goal scales slightly - will help if using current dirty renderer test branch.
NOTE: the final_value from a lerp can be more distant than expected. lerping to .5 seems like it can end up around .57. Outside the .05 range in goal lerping
make real goal height/thickness a percentage rather than subtraction from settings value
fix conflict
Merge pull request #52 from Kovak/chozabu-light_hockey

Chozabu light hockey