updated survey to allow group submissions

.idea/inspectionProfiles/Project_Default.xml

_supplementary_files/internship/database.png

app/src/main/AndroidManifest.xml

.../com/yearthreeproject/xbframework/ExperimentActivity.java

...n/java/com/yearthreeproject/xbframework/MainActivity.java

...va/com/yearthreeproject/xbframework/ProgressActivity.java

...va/com/yearthreeproject/xbframework/SettingsActivity.java

.../yearthreeproject/xbframework/SurveyResponseActivity.java

app/src/main/res/xml/backup_descriptor.xml

app/src/main/res/xml/network_security_config.xml