Initial commit of all retopology script files. Need to ween out Contours.
Version bump, author names, and addon name.
Update addon description
Update tracker URL for issue tracking.
code cleaning!

separated out common code and removed all refs to contours (except
wiki_url in bl_info of __init__).

note: had to move code from polystrips_ui to __init__ to get preferences/properties to work correctly.
making polystrips play nice with contours
make polystrips play nice with contours master
theme now used
theme uses enum
small code formatting and added debug to prefs
fixed theme until after beta release
prefs problem fixed!