resized the player, removed tracker code

Updated the embed to force the iframe down to 400px, as the
parameter-passing method was being ignored. Also removed player
controls on the dialogue.
removed an errant alert()
updated to use the Wistia API embed method

currently only semi-functional
Making embedded video work, connecting play/skip buttons to it
Fixing player aspect, removing controls, and adding expert mode
Making external player playPause button work
wait for dialogs to disappear and check for alert
1992: don't crash when viewing language with all private versions

Also PEP8ify the history view a bit.
Merge remote-tracking branch 'origin/dev' into dev
Merge remote-tracking branch 'wistia/dev' into dev
161: Merged wistia player changes
Add a migration for tasks.
Merge remote-tracking branch 'origin/dev' into dev
Updated transifex translations -- through update_translations.sh