Add list to GUI
Set Data Context for listbox (note: should use Caliburn Micro in future)
Format GUI
Add fields for adding ModularData entries
Add save button
Update _add so it can modify current list
Add Id modification and exception handling
Add load button
Add console
Create item removal button
Fix button alignment
Debug module data removal code
Clarify error message
Merge branch 'prototype/ui/xml-manipulation'