WinHelp to HtmlHelp conversion, part 1

The original version of CiderPress used a WinHelp help file, built
with an application called HelpMatic Pro.  This app used a proprietary
format, and had no facility for exporting to "raw" HPJ + RTF files, so
I decompiled the HLP and imported it into HelpScribble.

Using HelpScribble, I cleaned up the help file formatting a little,
fixed up the table of contents, and exported as "raw" HtmlHelp (HHP,
HHK, HHC, and a whole bunch of HTML).  I also split the pop-up help
text, which isn't supported by HelpScribble, into a separate text file
that Microsoft's HTML Help Workshop understands.

I'm checking in the files that HTML Help Workshop needs to generate a
CHM, so anyone can update the help text.  I'm also checking in the CHM
file, rather than adding the help workshop to the build, so that it's
not necessary to download and configure the help workshop to build
CiderPress.

This change adds all of the updated help, but only updates the Help and
question mark button actions for one specific dialog.  A subsequent
change will update the rest of the dialogs.

This change is essentially upgrading us from a totally obsolete help
system to a nearly-obsolete help system, but the systems are similar
enough to make this a useful half-step on the way to something else.
The code will centralize help activation in a pair of functions in the
main app class, so any future improvements should be more limited in
scope.

This also adds a build step to copy the CHM to the execution directory.
Merge branch 'master' of https://github.com/fadden/ciderpress