progress window: text shortened and idle time added

Two small things in the "progress window" when burning a CD/DVD:

1. The text showing elapsed and remaining time is truncated so the remaining time is not visible.

2. K3B counts idle time (waiting for media), which is misleading.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: k3b 2.0.2-3ubuntu4
Uname: Linux 3.4.0-030400rc5-generic-pae i686
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
Date: Mon May 14 20:57:57 2012
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
ProcEnviron:
 LANGUAGE=
 TERM=xterm
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: k3b
UpgradeStatus: No upgrade log present (probably fresh install)