Looks like you have an error in your /etc/bacula/bacula-dir.conf that prevents it from starting up. If you can't fix that, I'd suggest you purge the existing configuration completely (sudo apt-get purge bacula-director-common bacula-director-mysql) and reinstall.
Log snippet:
Setting up bacula- director- mysql (5.0.1-1ubuntu1) ...
[...]
* Starting Bacula Director...
19-May 22:29 bacula-dir: ERROR TERMINATION at lex.c:784
Config error: expected a string, got T_EOL: =
: line 236, col 12 of file /etc/bacula/ bacula- dir.conf
dbname = ; DB Address = ""; dbuser = ""; dbpassword = ""
...fail!
Looks like you have an error in your /etc/bacula/ bacula- dir.conf that prevents it from starting up. If you can't fix that, I'd suggest you purge the existing configuration completely (sudo apt-get purge bacula- director- common bacula- director- mysql) and reinstall.