Add missing folder icon.  Use folder icon for project nodes (Fix #56)
Add title to dialog (Fix #56)
Only change the name of the field if it's not custom (Fix #56)
Add expression dialog for default value (Fix #56)
Get first layer correctly. Use setdefault for dict (Fix #56)
Connect default location button (Fix #56)
Set default values from config widgets (Fix #56)
Reduce margins on config widgets
Remove description label for now; Fix crash in list widget