Improved UI

Still can't get links to work due to event bubbling
explore2 viz now stable
better viz, improved authorname parsing
fixed width issues to make one var control all in JS

Needs optomising.
viz finally works

refactored a LOT, made history & cache work properly!
MILESTONE!

CLS/ESDS/MRC data in and explore3 viz finalised
Fixed more data parsing bugs

et al.  & esds importer