I think I’ve found a workaround for the apostrophes-in-widget-titles problem. I tried using an apostrophe character at the place I wanted the apostrophe, and it turned into a quote after save, but I got an idea from one of Blogger’s comment notification emails to replace the apostrophe character position with '. That appears to display an apostrophe instead of getting converted to a quote. I’ll see if it holds.
Blogger Apostrophe Workaround
This post was published 13 years 2 months 19 days ago. A number of changes have been made to the site since then, so please contact me if anything is broken or seems wrong.