CLucene is optional!

.. and link with -lclucene-core not -lclucene

Fixes #543.
WIN32: NSI build script updated

.. to include new V3 dependencies.
Merge pull request #544 from amtriathlon/master

Enable translation of welcome text in BlankState.cpp and Wheelsize in Pages.cpp
WIN32 NSI missed off libusb0.dll
Enabled translation of supported devices legend in DeviceTypes.cpp