Desktop crashes trying to open deleted quickstart

[garrettjstevens]

To Reproduce

1. Select checkbox for recently opened session
2. Click "Add sessions to quickstart list" button
3. Click checkbox for the newly added quickstart entry
4. Click "..." next to newly added quickstart entry, click "Delete", confirm delete (while quickstart is still checked)
5. Click checkbox next to any other entry in quickstart list
6. Click "Go"

Error message

The session I used was named "Test1", and this is the error I got:

Unhandled Rejection (Error): Error invoking remote method 'getQuickstart': Error: ENOENT: no such file or directory, open '~/.config/@jbrowse/desktop/quickstart/Test1.json'