* Model templates - select and load after Create Model for color radios
* Model templates - save model as template, only for color radios
* Small fix to drawTextLines(...) to handle consecutive spaces
* Change title of button for empty template folder
* I found out why "no trailing slash = important" in path names!
* Reworked file and path name string manipulation
No longer using chdir, as Lua scripts etc. could be messing with the working dir
Use buffers more and std::string less
* Adjusting the size of buffers
I think that I got it right now. Really hard to figure out the right size constants!
Also added storageDirty(EE_MODEL) after reading the template file and renaming the model
* Added storage checks
* Slight simplification - all template buttons are similar
* Added "Blank Model" button
* Wizard Lua script
If there is a Lua script with the same name as the template file in the folder, then it is run after reading the template.
* Add filename to lua `model.getInfo()`
* Make `getModelNumberStr()` globally available
* Move variable extern
* Move constexpr to header, remove externs
* Perhaps .cpp should include its OWN header
