learning circles

coordinate study groups for online courses

Default course selection to english on learning circle create form

Bump acorn from 6.1.1 to 6.4.1 Bumps [acorn](https://github.com/acornjs/acorn) from 6.1.1 to 6.4.1. - [Release notes](https://github.com/acornjs/acorn/releases) - [Commits](https://github.com/acornjs/acorn/compare/6.1.1...6.4.1) Signed-off-by: dependabot[bot]

Add regex rule for allowing cross origin requests from any p2pu.org subdomain

Ensure consent is present in signup info and custom question is answered if present. Updated tests accordingly

Update bytestring changes for code lifted from django to do email validation

Bump bleach from 2.1.3 to 3.1.1 Bumps [bleach](https://github.com/mozilla/bleach) from 2.1.3 to 3.1.1. - [Release notes](https://github.com/mozilla/bleach/releases) - [Changelog](https://github.com/mozilla/bleach/blob/master/CHANGES) - [Commits](https://github.com/mozilla/bleach/compare/v2.1.3...v3.1.1) Signed-off-by: dependabot[bot]