Photo DB: Added docstrings and pylint fixes.
Tidy: Remove unused module.
Factory: Added docstrings and pylint fixes.
Tests: Fix for PhotoData constructor changes.
PhotoManager: Add docstrings and pylint fixes.
Project Defines: Add docstring.
Signal: Added docstrings and pylint fixes.
StateMachine: Added docstrings and pylint fixes.
Thread: Added docstrings and pylint fixes.
WeakMethod: Added docstrings and pylint fixes.
Glue: Added docstrings and pylint fixes.
Model: Added docstrings and pylint fixes.
Page: Added docstrings and pylint fixes.
PageManager: Added docstrings and pylint fixes.
View: Added docstrings and pylint fixes.
Models: Added docstrings and pylint fixes.
Main: Added docstrings and pylint fixes.
Checkin: Script to check pylint and unit tests.