Revert "Disable the static directory in the build process"

This reverts commit 0674e94.

Author: matrixise

conf.py

@@ -178,6 +178,7 @@
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ['_build/html/_static']
 
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied