docs: sphinx 1.4.2

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>

docs/conf.py

@@ -28,23 +28,14 @@
 
 import sphinx.environment
 
-_warn_node_old = sphinx.environment.BuildEnvironment.warn_node
-
-
-def _warn_node(self, msg, *args, **kwargs):
-    """Do not warn on external images."""
-    if not msg.startswith('nonlocal image URI found:'):
-        _warn_node_old(self, msg, *args, **kwargs)
-
-
-sphinx.environment.BuildEnvironment.warn_node = _warn_node
-
-
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
 #needs_sphinx = '1.0'
 
+# Do not warn on external images.
+suppress_warnings = ['image.nonlocal_uri']
+
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.

setup.py

@@ -53,7 +53,7 @@
 
 extras_require = {
     'docs': [
-        'Sphinx>=1.4',
+        'Sphinx>=1.4.2',
         'sphinxcontrib-httpdomain>=1.4.0',
     ],
     'postgresql': [