reorged code according to @fassen's recommendations.
modified main.
Made changes according to @faassen

Suggestions from
https://github.com/webmaven/appengine-todos-morepath/issues/3#issuecomme
nt-62388477
Reversed some changes.
Changed morepath version to 0.7.2, and made attendant changes.
reorganized code
Switched to 0.8
Fixed root URL.
Removed top level __init__.py and moved main.py to todos dir.
moved main.py to todos dir.
simplified code and removed test code.
Merge branch 'reorg'