new secrets for clever oauth
Revert "new secrets for clever oauth"

This reverts commit f904ce9c5cc14c037cd6456febc020071081dd9c.
some svg block validation
Merge branch 'staging' of github.com:code-dot-org/code-dot-org into staging
add clever api keys
Performance improvement sending emails, fix zip code on bottom of email.
Merge branch 'production' into test
Merge branch 'test' into staging
Dropbox
Merge pull request #93 from code-dot-org/chapterPartners

eu.code.org updates
Merge pull request #92 from code-dot-org/blockSvgValidation

some svg block validation
fix row with single value input
Merge pull request #95 from code-dot-org/blockFix

fix row with single value input