flex chart for swim data

rowers/dataprep.py

@@ -1707,6 +1707,7 @@ def getrowdata_db(id=0, doclean=False, convertnewtons=True,
 def getsmallrowdata_db(columns, ids=[], doclean=True,workstrokesonly=True,compute=True):
     #    prepmultipledata(ids)
 
+
     if ids:
         csvfilenames = ['media/strokedata_{id}.parquet.gz'.format(id=id) for id in ids]
     else:
@@ -1716,6 +1717,7 @@ def getsmallrowdata_db(columns, ids=[], doclean=True,workstrokesonly=True,comput
     columns = [c for c in columns if c != 'None']
     columns = list(set(columns))
 
+
     if len(ids)>1:
         for id,f in zip(ids,csvfilenames):
             try: