theme: upgrade to latest v4.1 dev (talk front matter upgraded)

Also:

- Project and Custom widgets renamed (upgraded)
- Rearranges section positions and adds demo section to introduce
the template and help the user get started

content/home/accomplishments.md

@@ -7,7 +7,7 @@ title = "Accomplish­ments"
 subtitle = ""
 
 # Order that this section will appear in.
-weight = 9
+weight = 50
 
 # Date format
 #   Refer to https://sourcethemes.com/academic/docs/customization/#date-format