Fixes #440 - upgrades to rails 4.1.1

- Updates rails gem to 4.1.1.
- Updates other gems to latest versions.
- Updates HumanServicesFinder to OhanaWebSearch (Fixes #408)
- Regenerates vcr cassettes.
- Removes deprecated treat_symbols_as_metadata_keys_with_true_values.
- Adds infer_spec_type_from_file_location to infer spec type.
- Adds new button parameter to link URL.