CLOSED - task 151: java.lang.NumberFormatException: unable to parse
'10000 .zCv. Bz' as integer 
https://github.com/DigitalCampus/oppia-mobile-android/issues/issue/151
CLOSED - task 131: Remove unnecessary case statements from submittracker
tasks 
https://github.com/DigitalCampus/oppia-mobile-android/issues/issue/131