Removed leftover checkUBRequestIsValid function from VoyagerRestful.
Added call slip and UB request support to the Demo driver.
Ndl: Switched requests (hold, call slip, ub) to use a lightbox for nicer look.
Merge branch 'master' of https://github.com/KDK-Alli/NDL-VuFind

Conflicts:
	web/interface/themes/ndl/MyResearch/holds.tpl