Add additional checks that sense-check the contents of the data

[robredpath]

We could do additional checks that carry out more meaningful / helpful checks of the contents of the data that's supplied, such as:

• org id / name mismatches (e.g. Investigate datastore API to help check org-ids and titles #35 )
• web address checks - do the sites actually resolve? Do they use https, if available?
• lat/longs - do they match other location data?
• phone number formats