Update shared-desktop-ontologies to 0.5.0?

[Brad Hards]

Hi,

At the moment, I'm getting build errors in 
kdebase/runtime/kioslaves/common/timelinetools.cpp associated with 'involves' 
is not a member of 'Nepomuk::Vocabulary::NUAO'.

kdebase/runtime/CMakeLists.txt currently requires SDO_MIN_VERSION 0.3.0, and I 
have 0.4. It looks like 'involves' was added in r101
http://oscaf.svn.sourceforge.net/viewvc/oscaf/trunk/ontologies/nuao/nuao.trig?r1=95&r2=101&pathrev=101

So it looks like we need at least release version 0.5.

Any objections?

Brad