New fields for resource hubs

[kkemp85]

We want to add some new descriptive fields from the FMSF data into each resource. Some of the data will come from the "santaclaus" access database from the FMSF similar to the "owntype" field. These will be spatially joined to the data in the updating process in the FMSF to HMS plugin (associated with issues #234 and #235).

The fields are as follows:

• arch sites - none for now, need to hear from FMSF first
• structures - the "street" field
  - google maps link
• cemeteries - the "RouteTo" field
  - the "YearEstab" field
  - the "TotGrave" field
  - google maps link