FIX SESSION OBJECT CREATION BY ID
FIX SESSION OBJECT CREATION BY ID

tests: 
* command-line: sess = bot.session(sessions.id(1)) ;   (for 'ephys' sessions table)
* command-line: sess = bot.session(sessions.id(1)) ;   (for 'ophys' sessions table)
emeyers/Brain-Observatory-Toolbox,emeyers/Brain-Observatory-Toolbox