Replace kss-bbb ajax-spinner with a quieter one

0.5 second delay before showing spinner.  Added
a little div for it, to make it more visible.
Allow multiline calculation formula statement

The newlines are stripped out before eval.
LIMS-334
LIMS-1352 SamplingWorkflow not saved to sample

LIMS-1352 and upgrade step

Somehow, the AR-create code is not setting this value on the sample;
The bika-setup value is now set as the sample field's default value.