ccsm: Preferences > Profile > 'Reset to defaults' has unexpected results

[Doug McMahon]

Users may expect it to reset the defaults for the chosen profile but in the case of "unity" far from it.

Test case:
Install compizconfig-settings-manager
Open ccsm > Preferences
Leaving the profile on the default of unity click on the Reset to defaults button

What happens:
Basically most of the default ubuntu session plugins are disabled inc. Ubuntu Unity plugin

What users may expect:
The defaults for an ubuntu (unity) session to be restored

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: compizconfig-settings-manager 1:0.9.12.0+15.04.20141120-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
ApportVersion: 2.14.7-0ubuntu10
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Sat Nov 29 18:41:31 2014
InstallationDate: Installed on 2014-11-16 (13 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141114)
PackageArchitecture: all
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.