Upgrade pytoolbox to 7.1.16-beta
Use Ubuntu 14.04 for charms by default

Ubuntu 14.04 (Trusty Tahr) is the new Long Term Support version, so it makes sense to
use it instead of Ubuntu 13.04 (Raring Ringtail) which has been
unsupported(no more updates) for 3 months now.
Install gpac from the Ubuntu repositories

Instead of downloading a .deb of gpac from the official website, use the
Ubuntu repositories by default. The official .deb are not compatible
with Ubuntu 14.04, and Ubuntu 14.04 already has a recent version of gpac
in the repositories.
Replace PPA used to get FFmpeg

jon-severinsson FFmpeg PPA does not work on Trusty currently, so use my
PPA with a working FFmpeg.
Remove use of FFmpeg -sameq option

This option no longer exists, see
<https://www.ffmpeg.org/faq.html#Why-was-the-ffmpeg-_002dsameq-option-removed_003f-What-to-use-instead_003f>