Fix more deprecations.

Use new ConfigBinder Invocation.

Tidying in ChannelFrame.

Couple of tidyings.

Support for core package changes.

Make DataLoaderWorker use Paths.

Plugin support for core FrameContainer change.

Pull out logfile locating logic.

This moves a few hundred lines of 'where-to-put-the-log-file' logic
from the LoggingManager into a new class.

Everything is functionally identical for now, except the Locator
uses a ConfigBinder for its settings.

Tidy up some more getConnection calls.

Fix getConnection issues in debug plugin.

Specify charset in TextFile.

Stop using StreamUtils methods.

Stop using StreamUtils methods.

Remove unused variable.

Lambdas.

Unit test EventTriggeringFocusListener

Split focus listener into its own class.

Stop using ErrorManager.getErrorManager().

Remove more Logger calls.