Refactor: Test & Doc: Remove test/vader_include and move DesignNotes to doc

- vader_include is declareing functions -> faster to load (parse) once in
vimrc
- DesignNotes is doc so goes to doc

test/command_generate_links.vader

@@ -1,4 +1,8 @@
-Include: vader_includes/vader_setup.vader
+# Automatic link generation
+# Related to:
+#   - wiki file discovery 
+#   - buffer list insertion (see: vimwiki#base#update_listing_in_buffer)
+
 
 Execute (Copy Wiki's Resources):
   Log "Start: Copy Resources"
@@ -196,7 +200,4 @@ Execute (Clean):
   Log "End: Reset shiftwidth to the default: 8"
   set sw&
 
-
-Include: vader_includes/vader_teardown.vader
-
 # vim: sw=2:foldmethod=marker:foldlevel=30:foldignore=: