0.30.1

• Add filters to the Course List table (availability and pacing type)
• Add tooltips to the column headers of the Course List table
• Add a CSV download endpoint for the Course List table
• Add a button to the Course List UI for downloading the CSV
• a11y: Add sr-only text for when date is not available in course list
• a11y: Set roster and course list paging component to element
• a11y: Use edx gray colors for pagination to increase contrast
• a11y: Add disabled/active screen-reader text to pagination links
• Fix Insights tracking bug: moved segment.page() after logging user
• Fix failing Travis builds by pinning backgrid bower package to 0.3.7
• Change openedx.yaml release branch to master
• Silence django collectstatic output
• Upgrade edx-django-release-util to 0.3.0
• Upgrade newrelic python package