[xwiki-devs] {platform} A few minor bugs

I'll be posting a few little things as minor bugs on jira unless anyone suggests otherwise. 1. postgres jdbc-8.4 (latest) is incompatible. changing the version given in platform/pom/pom.xml makes it (apparently) work okay. 2. Document.getChildren() skips pages which give the parent as wiki:docname This is an arcane method of linking but it works, I think it should be fully supported or should not work at all. 3. Object GUIDs are changed on document rename.