deleteThumbnails function added
Merge remote-tracking branch 'upstream/master' into deleteThumbnails
update the changelog
Cleanup
Hide iframe added by Pinterest

For some stupid reason Pinterest adds an iframe at the bottom of the page which
adds whitespace below the footer.

This will fix https://github.com/forkcms/forkcms/issues/392
Proper identation
Updated changelog
Merge branch 'master' into pinterest-iframe-fix

Conflicts:
	CHANGELOG.md
Merge branch 'deleteThumbnails' of https://github.com/guytarded/forkcms into guytarded-deleteThumbnails

Conflicts:
	CHANGELOG.md
Removed useless code