Set title of Resize/Move dialog for an extended partition (#44)

The title has never been set in this case, and defaulted to the name of
the executable 'gpartedbin'.  Fix this.

Closes #44 - Title not set in Resize/Move dialog for extended partitions
4 jobs for <span class="ref-name">44-title-not-set-in-resize-move-dialog-for-extended-partitions</span> in 26 minutes and 28 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #245424
centos_build

00:08:59

passed #245425
ubuntu_build

00:10:55

 
  Test
passed #245426
centos_test

00:12:25

passed #245427
ubuntu_test

00:15:32