history filters do not match specification

[Robert Roth]

Binary package hint: software-center

The current filters available in the history are All Changes, Installations, Updates and Removals.
This does not match the specification from https://wiki.ubuntu.com/SoftwareCenter#history, as:
* the Installations item should be all Installations
* the updates item should not be visible (explicitly specified)
* there should be a Purchases item (reported in another bug, bug #640336)

To match the specs the Installations item should be renamed and the updates item should be removed.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: software-center 3.1.25
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic-pae 2.6.38
Uname: Linux 2.6.38-7-generic-pae i686
Architecture: i386
Date: Sun Apr 3 15:25:42 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: software-center
UpgradeStatus: Upgraded to natty on 2011-03-28 (5 days ago)