Fixed for Can't search of filter items on Add Content by Japanese `#374`_
Fix CI configuration
Fix dropping Dexterity images on banner tile.
Fix Galleria warning on empty carousel tiles.
Fix MANIFEST.in.

And make sure that check-manifest does not complain if you use it.
See https://pypi.python.org/pypi/check-manifest
adding test code refs #374
Merge pull request #375 from terapyon/master

Please merge for Fixed for Can't search of filter items on Add Content by Japanese
Fix test (refs. #374)
Fix changelog
Merge branch 'master' into list-tile-show-more

Conflicts:
	CHANGES.rst