Bug#585097: change update-notifier-kde from depends to recommends

[Patrice Pillot <patrice.pillot@toulouse.archi.fr>]

Hi,

I very strongly support Alan's proposal.

Since update-notifier-kde logically depends on update-notifier-common, this 
implies that installing kde-standard to get a coherent standard desktop 
environment will
1) trigger periodic edits of /etc/motd (through 
/etc/update-motd.d/90-updates-available)
2) consequently sporadically slow down every "first-login-of-the-day" to the 
host
3) display a notification popup on the first-logged user's desktop about 
available updates, whether notifying this user is relevant or not.

Such a behaviour might be sensible (albeit this is disputable) on a machine 
always used by a single user but it is quite unbearable on a real multi-user 
host where ordinary users do not have administrative privileges.

Thanks in advance,

pp