Handle errors while sending messages
Update reqwest

Hopefully this now supports CORS-ish requests on IE9
Tell reqwest to make a cross-origin request
Revert "Disable send SMS and tracking on IE temporarily"

This reverts commit e92be59e27d7aa02ce66f41915bb49cadc27b616.

It also didn't work anyway because accidental comments
Merge branch 'master' into gh-pages