fixes #159 and implements #133 correctly
Merge pull request #160 from joebordes/fix_159_responsive_video

Fix #159 responsive video
Merge remote-tracking branch 'upstream/respond2.10'
add allowed file types to app.php
Merge remote-tracking branch 'upstream/respond2.10'
Snippet enhancements
Publish .pot for release
Update README.md for release
add PHPMailer lib
Merge remote-tracking branch 'upstream/respond2.10'
Merge remote-tracking branch 'upstream/master'