2.0.0-beta.15

Added

• Add main content placeholder to programs list view
• Create a function checking username in social auth pipeline
• Extend social-auth middleware to use a page to display error
• Add urls property to UserSerializer. The urls are built with a new setting MAIN_LMS_USER_URLS which contains custom links to access to LMS profile views from richie.
• Add a useMatchMedia hook to easily show/hide react component through media query
• Add LimitBrowserCacheTTLHeaders middleware to limit the browser cache TTL

Changed

• Allow default CKEditor settings on "maincontent" placeholders
• Remove copyright notice from footer in base template and allow customizing it
• Allow customizing the side pages created by the demo site
• Make demo site work without licences placeholder
• Allow empty content on glimpse plugins
• Switch from deprecated tslint to eslint js linter and update codebase accordingly.
• Improve Course Search UX by triggering scroll up after courses are retrieved

Fixed

• Frontend did not report error to Sentry
• Fix how EDX_USER_PROFILE_TO_DJANGO default value is set
• Use variables for button colors in language selector so it fits in with themes.