Do some simple validation
Add a transient error field to display update errors
Use a Throwable for latestError
Dont autosave when no file is set
Catch CannotResolveClassException when parsing response (not an RSS)
Use a Boolean to tell if the Subscription failed to update
Switch the AnchorPane to a VBox so we can easily add/remove a Label for
errors
If something very wrong happens, show an exception dialog
When a Subscription has failed to update, show a label bellow the feeds
TableView to indicate this to the user
Fix NPE
Add an update all feeds menu option
Verify the Item is valid before adding it.
Moved the View menu items to the Job menu
Organize translations
Update translations