XWIKI-9904: Fix the init of members in subwikis
XWIKI-9904: Fix a problem displaying members

* Convert list of 'members' HTTP parameters into a comma-list (for userPicker)
Fix typos
Merge remote-tracking branch 'upstream/master' into XWIKI-9904

Conflicts:
	xwiki-platform-core/xwiki-platform-wiki/xwiki-platform-wiki-ui/xwiki-platform-wiki-ui-mainwiki/src/main/resources/WikiManager/CreateWiki.xml
Merge pull request #255 from woshilapin/XWIKI-9904

XWIKI-9904: Fix the init of members in subwikis