Customizable Measuring/Coffee Scoop

Remix of [Werner Stein's](https://www.thingiverse.com/wstein) excellent [Customizable Measuring Cup/Scoop](https://www.thingiverse.com/thing:619626)
Please go there unless you need a custom scoop not included with his project.
That project currently has a Customizer bug.
I've notified wstein, the original author, of my efforts.

My remix is attempting to repair the Customizer function:

--Renamed "wall\_thickness\_" (with trailing underscore) to "wall\_thickness" and renamed "wall\_thickness" to "wall\_thickness\_adjusted".
(so \_thickness\_ doesn't come out in _italics_)
(That is, Thingiverse interprets enclosing _ characters as markup for italics when Markdown is enabled. IDK if this caused trouble with Customizer or not, but it did cause the Customizer report to display the variable name improperly.)

Also fixed use of deprecate assign() calls. I think the console warnings from this may have been generating the script error notification in Customizer. I really wish makerb