add source dialog problems

The Add source dialog accessible from the Other Software tab's Add... button has two problems:
- it does not have a title set, thus the title is software-properties-gtk, and should be "Add" (based on the HIG, the title should be the label of the action opening the dialog without the trailing ellipsis)
- it shows the add icon regardless of the buttons-have-icons system-wide setting (it should respect system-wide settings)
See the screenshot of the current behavior.
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ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: software-properties-gtk 0.82.4 [modified: usr/share/software-properties/gtkbuilder/dialog-add.ui]
ProcVersionSignature: Ubuntu 3.2.0-15.24-generic-pae 3.2.5
Uname: Linux 3.2.0-15-generic-pae i686
ApportVersion: 1.91-0ubuntu1
Architecture: i386
Date: Sat Feb 11 14:40:57 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120110.2)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: software-properties
UpgradeStatus: Upgraded to precise on 2012-02-03 (7 days ago)