[bp/r51509][FIX] installer: Propagate multi and lang values in convert charset form 


git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@51510 b456876b-0849-0410-b77d-98878d47e9d5
[bp/r51513][FIX] Replacing plugins during profile export would occasionally cause nesting errors

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@51514 b456876b-0849-0410-b77d-98878d47e9d5