Minor Convert reports /report/log/ and /report/loglive/ to the new API
Reports must work nicely with both log_legacy and log_standard
- Alter reports to accept new event object instances instead of array data.
- Alter reports to understand new event properties.
- For each report add a setting which log reader to use
- Deprecate function print_log(), move html to corresponding renderers
- Deprecate functions print_log_ods(), print_log_csv(), print_log_xls() - they should all be part of /report/log/
- Deprecate function build_logs_array()
- Deprecate function get_logs_usercourse(), move code into /report/log/
