Merge pull request #20 from saily/master

Use correct dependency for plone.app.testing.
comment autocropping settings field
improve button usability. refs #10
fix editor tests
clean uninstall. refs #14
more descriptions for #9 and #10
comment autocropping settings field
improve button usability. refs #10
fix editor tests
clean uninstall. refs #14
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/plone/app/imagecropping/browser/editor.pt
	src/plone/app/imagecropping/locales/de/LC_MESSAGES/plone.app.imagecropping.po
	src/plone/app/imagecropping/locales/en/LC_MESSAGES/plone.app.imagecropping.po
	src/plone/app/imagecropping/locales/es/LC_MESSAGES/plone.app.imagecropping.po
	src/plone/app/imagecropping/locales/nl/LC_MESSAGES/plone.app.imagecropping.po
	src/plone/app/imagecropping/locales/plone.app.imagecropping.pot
	src/plone/app/imagecropping/locales/pt_BR/LC_MESSAGES/plone.app.imagecropping.po