Logging for eCarePlanner

[kbertodatti]

Things to log:

• A record of any errors encountered (should be done already)
• The time stamp for each query run
• The time stamp for each query return
• The number of resources returned for each query
• The time stamp when a user enters a tab
• The time stamp when a user exits a tab
• A unique session ID that allows these events to be understood in the context of each other