the flag must be in all src and test files so that we get the benefit of
running in the strict mode even in jstd
the following script was used to modify all files:
for file in `find src test -name "*.js"`; do
echo -e "'use strict';\n" > temp.txt
cat $file >> temp.txt
mv temp.txt $file
done
select (one/multiple) could not chose from a list of objects, since DOM requires string ids.
Solved by adding index formatter, which exposed incorrect handling of formatters in select
widgets.