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 from 44-title-not-set-in-resize-move-dialog-for-extended-partitions in 12 minutes and 19 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #245233
centos_build

00:03:27

passed #245234
ubuntu_build

00:03:07

 
  Test
passed #245235
centos_test

00:08:51

passed #245236
ubuntu_test

00:07:36