move wsseheader to class property add schedule, import functions add function for creating import xml
move wsseheader to class property
add schedule, import functions
add function for creating import xml

VinACE/openclinica_scripts,lindsay-stevens-kirby/openclinica_scripts,VinACE/openclinica_scripts,VinACE/openclinica_scripts,lindsay-stevens-kirby/openclinica_scripts