Finally organize processor module to match menus

Effects section is DONE
Reorganize some menu items

There are too many distorts, so some got moved to Artistic (where they
are a better fit anyway)
New Rotate distort

I needed an internal rotate function separate from the full-image rotate
tool, because it has to operate on selections.  It's not practical to
merge the two tools into one because the full-size one must be capable
of enlarging the canvas, while the selection one cannot.  Also I needed
a rotate function that supports PD's full distort engine, with various
edge-wrapping filters, for a radial blur function.
Mirror recent updates/fixes to master bluMouseEvents
Fix/improve a number of command bar functions

Comments speak for themselves.  New behavior was needed to address
dialogs that handle multiple tools (e.g. median/dilate/erode), and
vertical scroll bars are now supported (required for Photo Filters
tool).
Remove unneeded icons from the resource file

(should have done this as part of
cafba76593648105b1f237c84449735c3688c0a6)
Add command bar to more tools

Getting closer to having this done.  Most the nasty tools are finished,
so it should be smooth sailing from here.