Implemented hiding/showing complexity in hospital creation screen based on deployment setting and hospital marker tweaking

Based on the deployment setting flags in the config file, certain fields in the hospital creation screen are shown/hidden. This is done in order to hide complexity whenever needed. Also implemented marker function which shows different colored markers based on the hospital status.
Oh, this could well be a simple as:

s3db.hms_hospital.location_id.widget = S3LocationSelectorWidget(...)

...in the respective customise_hms_hospital_resource