Issue #1842326 by c4rl, sun, joelpittet, pakmanlh, jjcarrion | jenlampton: Merge _theme_table_cell() into theme_table().
Issue #2236089 by cs_shadow, sriharsha.uppuluri: theme_settings schema duplicates the label Shortcut icon settings where it doesn't make sense.
Issue #2241549 by neclimdul: Remove registerContainerConfiguration() cruft from DrupalKernel.