Merge tag 'gzip-csvmail' into develop

hotfix csv file decompression

rowers/tasks.py

@@ -93,8 +93,8 @@ def handle_sendemailcsv(first_name,last_name,email,csvfile):
     if os.path.isfile(csvfile):
         email.attach_file(csvfile)
     else:
-        csvfile2 = csvfile[:-3]
-        with gzip.open(csvfile,'rb') as f_in, open(csvfile2,'wb') as f_out:
+        csvfile2 = csvfile
+        with gzip.open(csvfile+'.gz','rb') as f_in, open(csvfile2,'wb') as f_out:
             shutil.copyfileobj(f_in, f_out)
             
         email.attach_file(csvfile2)