* Make sure /var/lib/ubiquity/langpacks gets generated (LP: #630924). * Fall back to root if the regular user cannot be found in ubiquity-dm (LP: #640386). * Properly handle dmimodel() returning the null string. * Fix bootloader installation test (LP: #640341). * Set a the respective timezone, both internally and visually, when an entry is selected from the geonames autocompletion.