Added icons for visual countdown, derivative work of ktimer - GPL2, ref. http://www.kde.org/applications/utilities/ktimer/
Apologies - multi change commit by tired github newbie:
1. Simplified go_send* into single function

2. Switched to using DBUS_SESSION_BUS_ADDRESS instead of DISPLAY to fix
lack of notification on kubuntu. Method ref.
http://askubuntu.com/questions/298608/notify-send-doesnt-work-from-crontab

3. Added visual countdown via icons.

4. Security changes: 
- Added paths to commands run as root.
- Changed notification at jobs to run under kid user not root
- removed temp file before write to save symlink trash risk (e.g. tmp
filename exists as link pointing to system file, overwritten when
written)
Removed temporary file for process kill prior to write to remove symlink
risk (e.g. tmp filename exists as link pointing to system file,
overwritten when written)
Updated with Paul Watson's contributions, including kubuntu support and custom icons. Thanks Pail!
Added contributions from Paul Watson. Kubuntu support and custom icons. Thanks Paul!!!