Comparison table for HP and SwissMicros RPN calculator models

[Steve Simpkin]

Sylvain Cote, I agree!
J-F, Thanks catching that.

The web pages and PDF file have been updated as follows:
* Consolidated the HP-41CX into the HP-41C/CV/CX column.
* Added the 41CL calculator.
* Added a 41CL photo section to the Photo Gallery.
* Separated the WP43 and C47 models into their own columns.
* Added "Traditional Enter key operation*" row under the Logic section.
* Fixed the link for WP43 project home page.