Add L2SM model into JULES

Hi Tristan:

So, I now have also added the wlight_lyr output variable to the suite u-da046m_UK over the UK region. I copied the sample output to:
~pmcguire/for_tristan/u-da046m_UK/

The prior version of the sample output (without wlight_lyr) was moved to ~pmcguire/for_tristan/u-da046k_UK/ .

The sample output is for the starting year of 1860, after a short spinup.

Patrick

Thanks Patrick. Nothing to add at this stage. I need to find a couple of hours this week at put together all the pieces from you and Natalie. I will get back in touch when I have something to show.