[FIX] installer: Use js to set lang if dropdown changed and the user doesn't wait for the page to reload (and just clicks "continue")

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48692 b456876b-0849-0410-b77d-98878d47e9d5
[FIX]Usability. Allow the admin wizard bar buttons to be tapped by human fingers in mobile mode.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48694 b456876b-0849-0410-b77d-98878d47e9d5