Project cleanup 01

[zfi]

This update is a maintenance patch to correct an number of issues that were identified while investigating an issue where project timestamps were either invalid when displayed in the Edit Project dialog or the timestamp section of the dialog was missing.

• Renamed the modules.js file to edit_project.js and move it into the project folder since it contained all of the code for the Edit Project dialog box.
• Refactor this new edit_project file to encapsulate the UI functionality within a single editProjectDialog object.
• Improve project loading code to detect the variety of timestamps found in existing projects. Missing or invalid Modified dates are replaced with a default date set to the current date/time. Missing or invalid Created dates are replaced with the value of the Modified date.
• Standardized the 'created' field in the Project object to always be a Date object. This is addressed in issue Persist date elements of a project as epoch date #644.
• Refactor jQuery references to standard DOM references.