fix images folder ref in setup.py and requirements in __init__
Merge pull request #58 from twdb/bug--windows-install-problems

fix images folder ref in setup.py and requirements in __init__
add check to __init__ to change pkg names if installed in canopy
Merge branch 'master' into depth-refactor-redux
enabled zoom box icon on tool bar
update save line changes method to handle bin line
added notes edit feature in DLV, and locked disabling of widgets in DLV
added source attribut to view so changes would not immediately be applied to model.
removed "sdi_file" from source choices for user lines.
group trait defs for better reading and clean up some uneeded ones
added cached property to depth lines trait because it was calling it quite often.