MUZIMA-166 : Apply standard form template layout and validation to Papsm...

Below are the changes are done in Papsmear.html form.
1. Used toggleValidationMessages function for validating checkbox group.
2. None or Don't Know is selected it should be the only option Validation added in Current family planning method section.
3. Replaced Screening Site drop down field to autocomplete text box under Encounter Details section.
4. Separated Provider section from Observation Details section.
5. Moved Comments into last of the form.