remove empty unused columns from the user table
link to chapter partner sites from code.org home page
italia.code.org updates
Merge pull request #184 from code-dot-org/chapterPartners

chapter partner site updates
Merge pull request #182 from code-dot-org/remove-empty-user-columns

remove empty unused columns from the user table
update chapter partner link from code.org
hourofcode.com/uk updates
Merge pull request #186 from code-dot-org/chapterPartners

chapter partner site updates
fix partners link in footer of hourofcode.com
DTT