Add custom inflections for acronyms used in model names

[postmodern]

Since certain model names contain acronyms, we must configure ActiveSupport::Inflector to preserve them as acronyms instead of converting them to CamelCase when converting the model name into a human readable name:

• Wrong: IPAddress.model_name.human # => "Ip address"
• Correct: IPAddress.model_name.human # => "IP address"

[postmodern]

This will require renaming some of the migration classes as well CreateRoninIpAddressesTable -> CreateRoninIPAddressesTable.