#46290 by Neil, Egon, et al: when deleting a book page under 'orphan pages' we are returned to the homepage, backport from HEAD

Partial backport from HEAD, containing only the form fixes. Need to figure out update version management before committing pgSQL fix

(the system.module part already crept in during a previous commit)

#53021, Node types at node/add page not ordered alphabetically on non-english sites, patch by Egon Bianchet / chx

#48671 by Jaza: admin form fields not getting rendered at bottom of node form like they should., backport from HEAD

Patch #62332 by Zen: added missing add term link on admin/taxonomy page and got rid of some crufty code., backport from HEAD