DynamicCommand: avoid using the EventUtils class

This class will disappear in scijava-common 2.0.0.
Avoid using the deprecated Log utility class

This class will disappear in scijava-common 2.0.0.
Use 2.0.0 release of scijava-common
ij-core: use @Parameter injection
imagej.data: use @Parameter injection
imagej.ui: use @Parameter injection
imagej.core.commands: use @Parameter injection
imagej.core.tools: use @Parameter injection
OptionsLineWidth: remove debugging code
OptionsOverlay: avoid circ dep on OverlayService

At some point we probably want to restructure how the OptionsService
works in general, but this solution works for now.
ToolService: initialize lazily

This improves the service's initialization time by deferring
construction of data structures until they are actually needed.

It also avoids potential circular dependencies between the ToolService
and its Tools, since it is natural for a Tool to want to have a
reference to its associated ToolService.
UIService: initialize lazily

This improves the service's initialization time by deferring
construction of data structures until they are actually needed.

It also avoids potential circular dependencies between the UIService and
its UserInterfaces, since it is natural for a UserInterface to want to
have a reference to its associated UIService.
Check log.isDebug() in debug pre- & postprocessors

No need to do any extra work if log level is below debug.
imagej.legacy: use @Parameter injection
imagej.legacy: add missing javadoc paragraph marks
imagej.ui.swing: use @Parameter injection
OverlayFigureView: fill in missing javadoc
OverlayFigureView: use consistent variable name

It now matches the class name, as well as DatasetFigureView.
Flatten: clean up style
SwingOverlayManager: remove obsolete code