Move arduinos to new raspberries subsystem
Introduce new subsystem for Rasp Pis
doc_type filter now can take arrays of types
Relax validation requirement for created_by if document is being updated.
Add bolded font css class.
Add update_log update function for raspberries.
Sig changes to rasp pi master control.  

Implement logging, send commands to devices.
Take id from request if document doesn't exist.
Whitespace updates.