can launch evolution from the greeter in 13.10

[Marc Deslauriers]

In Ubuntu 13.10, indicator-datetime will launch evolution from the greeter.

Steps to reproduce:
1- apt-get install evolution
2- From greeter, click on calendar header

Expected results:
- Nothing happening

Actual results:
- evolution is launched

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: indicator-datetime 13.10.0+13.10.20131023.2-0ubuntu1
ProcVersionSignature: User Name 3.11.0-19.33-generic 3.11.10.5
Uname: Linux 3.11.0-19-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Mon Apr 28 16:39:17 2014
InstallationDate: Installed on 2014-01-31 (87 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MarkForUpload: True
SourcePackage: indicator-datetime
UpgradeStatus: No upgrade log present (probably fresh install)