Allow POST to create Option

Allows the POST for OptionController, to let users add options to the
list of options.
Hook in front end for adding Options

Adds some fields to allow a new option to be added to the list
Pressing enter on any of the fields submits the option, as does pressing
the button.
Prevent mayhem

Renamed /Admin => /Admin1790, to stop people accidentally finding it by
searching likely addresses.
Consolidate keypress methods

Adds one keypress method to the row, rather than having one per cell
Fix "Firefox return" bug

The event handler should take an event argument, rather than relying on
the additional event data. Firefox only supported some of these methods
Merge pull request #14 from tpkelly/feature/add-options

Add Restaurant options