add withdraw action to contract admin both under final legal approval and pending signature

Signed-off-by: Jiang Bian <jbian@uams.edu>
update report email service, send email to generated user, change to email tamplate

Signed-off-by: Jiang Bian <jbian@uams.edu>
allow multiple emails for report

Signed-off-by: Jiang Bian <jbian@uams.edu>