Jenkins build server

[Boudewijn Rempt]

I'm not sure everyone has noticed, but we've got a new build server:

http://build.kde.org/job/calligra_master/

It has basically all dependencies and builds everything (unlike Jos'
build server), but doesn't run the document tests (which Jos' teamcity
server does). It is setup by Ben Cooksley.

Nice features are checking for warnings (of which we have way too many) 
and a nice graph of our tests over time. And we still should try to get 
our test failures down to zero!

Boudewijn