Bug#426186: When launched from the menu, freqtweak silently fails

["Emmet Hikory" <emmet.hikory@gmail.com>]

Package: freqtweak
Version: 0.6.1-1.4

When freqtweak is launched from the menu, it silently fails (although
an error message is stored in ~/.xsession-errors). Launching from the
command line results in the error message "No good client name or JACK
server not running?". This error only happens if a JACK daemon is not
already running.

When this error occurs, freqtweak should provide graphical feedback to the user.

To work around this, jackd must be started, either from a command line
or with qjackctl, prior to starting freqtweak.