- added MigrateSourceSpreadsheet migration
- added new migrations and sample files
- adjusted field mappings
- added phpexcel as a dependency
- added dependencies
- remove production data files
- added taxonomy migration and revised node migrations
- renamed migration include files
- added new migrations for practices etc.
- rename existing migrations for consistency
- added data sources for spatial locations
- improved generic migration for locations (geofield data)
- modified .gitignore
- split Staff migration into two parts : 1) Staff 2) Team associations