LDEV-2068 fix 'http socket read of headers timed out' error when adding lesson. now use moodle's soap's default values (unlimited for connection timeout and 30s for response timeout)
LDEV-2114 Learning* processing of penalties and total grades* corrected attempt's start time and finish time* added attempt summary* overall feedbacks* implemented options from advanced tab
LDEV-1914, LDEV-2160 Set minimum values for grouping steppers in PI. Fixed disabled stepper problem. Fixed up some of the code in the PI, specifically explicitly setting null values to properties of the grouping object that do not apply to the chosen type of grouping. This fixed some persistent values when switching between group types.
