Clean up TODOs

Focus on necessary production code, first. (But try to avoid technical
debt.......)
Change locations

Not using dropbox.
Note: Truetype file still is hardcoded.
Remove StrDiff
Clean up merge
Merge branch 'centricity' of https://github.com/jploudre/undevelop into centricity

Conflicts:
	Coding Ideas.md
Clean up merge

I'll need to learn how to do this correctly someday.
Add StrDff back

Need to do that more carefully.