Fix email-settings in dashboard.
Merge pull request #111 from WatanabeYasumasa/gacco2/master

UPDATE email-settings in Dashboard
EDX-412: Add Google Analytics Tracking Code for conversion.
EDX-414: Change csv module to unicodecsv module.
Merge pull request #113 from nttks-dais/gacco2/dais-unicodecsv

EDX-414: Change csv module to unicodecsv module.
Merge pull request #114 from nttks-dais/gacco2/dais-analytics

EDX-412: Add Google Analytics Tracking Code for conversion.
add ugettext and fix datadog encode
EDX-435: Delete DL buttons for video and transcript when users watch video by smartphone.
Merge pull request #115 from YoshidaKS/EDX-411

add ugettext and fix datadog encode
Merge pull request #116 from hkawasaki/EDX-435

Delete DL button for video and transcript when users watch video by smar...
EDX-378: Add command for YouTube transctipts auto update
EDX-439: Fix encode error when downloading survey csv
Merge pull request #119 from yokose-ks/EDX-378

EDX-378: Add command for YouTube transctipts auto update
Merge pull request #120 from yokose-ks/EDX-439

EDX-439: Fix encode error when downloading survey csv
EDX-378: Fix typo
Merge pull request #122 from yokose-ks/EDX-378

EDX-378: Fix typo
EDX-378: Add shell for cron job
EDX-191: Fix typo
Merge pull request #123 from yokose-ks/EDX-378

EDX-378: Add shell for cron job
Merge pull request #124 from yokose-ks/EDX-191

EDX-191: Fix typo