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/featured.md

@@ -0,0 +1,63 @@
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+# A Featured Publications section created with the Featured Content widget.
+# This section displays publications from `content/publication/` which have
+# `featured = true` in their front matter.
+
+widget = "featured"  # Do not modify this line!
+active = true  # Activate this widget? true/false
+weight = 80  # Order that this section will appear.
+
+title = "Featured Publications"
+subtitle = ""
+
+[content]
+  # Page type to display. E.g. post, talk, or publication.
+  page_type = "publication"
+  
+  # Choose how much pages you would like to display (0 = all pages)
+  count = 0
+
+  # Page order. Descending (desc) or ascending (asc) date.
+  order = "desc"
+
+  # Filter posts by a taxonomy term.
+  [content.filters]
+    tag = ""
+    category = ""
+    publication_type = ""
+  
+[design]
+  # Toggle between the various page layout types.
+  #   1 = List
+  #   2 = Compact
+  #   3 = Card
+  #   4 = Citation (publication only)
+  view = 3
+  
+[design.background]
+  # Apply a background color, gradient, or image.
+  #   Uncomment (by removing `#`) an option to apply it.
+  #   Choose a light or dark text color by setting `text_color_light`.
+  #   Any HTML color name or Hex value is valid.
+  
+  # Background color.
+  # color = "navy"
+  
+  # Background gradient.
+  # gradient_start = "DeepSkyBlue"
+  # gradient_end = "SkyBlue"
+  
+  # Background image.
+  # image = "background.jpg"  # Name of image in `static/img/`.
+  # image_darken = 0.6  # Darken the image? Range 0-1 where 0 is transparent and 1 is opaque.
+
+  # Text color (true=light or false=dark).
+  # text_color_light = true  
+  
+[advanced]
+ # Custom CSS. 
+ css_style = ""
+ 
+ # CSS class.
+ css_class = ""
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