Make sure entry form cannot close unless attachment or file radio button is selected
start work on adding key info to entry settings
move entry settings from string to binary
Finish adding key info to entry settings panel.

fixes #70
add individual confirm constraint for entries

fixed #60
Don't auto-load expired entries. Also add database setting to disable this feature.

fixes #68
fix crash when closing entry settings to quickly after changing KeeAgent settings
fix key info not showing in new entry because password is not updated.
Add option to save key attachment to a temporary file when a key is loaded. Also add placeholders for retrieving the path to this file.