kalarm doesn't honour LANG and LANGUAGE variables

[Karl-Philipp Richter]

Exporting `LANGUAGE="en_US:en"` should start `kalarm` with an english interface, but that doesn't happen if another default language (german) is set up.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: kalarm 4:15.08.2-0ubuntu1
Uname: Linux 4.3.0-040300-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Tue Dec 8 09:59:17 2015
InstallationDate: Installed on 2015-09-14 (84 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MarkForUpload: True
SourcePackage: kdepim
SystemImageInfo: Error: command ['system-image-cli', '-i'] failed with exit code 2:
UpgradeStatus: Upgraded to wily on 2015-10-23 (45 days ago)