Update Examination import file following changes.

1) Remark require as UOM for height and weight.
2) PPUS require remark in Trace/Nil format.
3) PFT fields require remark update as.
FVC	 :- Observed FVC Value
FEV1:- Observed FEV1 Value
PEFR:- Observed PEFR Value

4) Update sample data columns (With new updates) and sample data as per attached sheet.
