Kubuntu 15.04

[Jonathan Riddell]

Well done on a great job on Kubuntu 14.10 everyone, doing two flavours
of Kubuntu is quite a feat and I think we pulled it off well.

Time to look at 15.04, Vivid.  

The big decision is whether to switch to Plasma 5.  My opinion is that
the stability is pleasingly good and there's only a few missing
features so we go for it and help out getting those missing features
in.  What do others think?

I've made a new Trello board with the items I know about including
those we discussed at Akademy
 https://trello.com/b/3s11MoXD/15-04

Please add or let me know of any more missing features in Plasma 5 we
need to think about.

Jonathan