Fixing css thing (#1385)

Author: caphrim007

docs/_static/theme_overrides.css docs/_static/css/theme_overrides.cssdocs/_static/theme_overrides.css renamed to docs/_static/css/theme_overrides.css

@@ -197,12 +197,6 @@
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ['_static']
 
-html_context = {
-    'css_files': [
-        '_static/theme_overrides.css',  # overrides for wide tables in RTD theme
-        ],
-    }
-
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied
 # directly to the root of the documentation.
@@ -362,3 +356,6 @@
     'agent': (
     'http://f5-openstack-agent.readthedocs.io/en/latest', None),
 }
+
+def setup(app):
+    app.add_stylesheet('theme_overrides.css')