Fix spacing after the figure and figure center alignment.
Re-generate CSS files.
Merge branch 'fix_image_center_alignment_and_spacing' of github.com:Kami/sphinx_rtd_theme into Kami-fix_image_center_alignment_and_spacing

Conflicts:
	sphinx_rtd_theme/static/css/badge_only.css
	sphinx_rtd_theme/static/css/theme.css