Given: an array containing hashes of names
Return: a string formatted as a list of names separated by commas except for the last two names, which should be separated by an ampersand.
Example:
list([ {name: 'Bart'}, {name: 'Lisa'}, {name: 'Maggie'} ]) // returns 'Bart, Lisa & Maggie'
list([ {name: 'Bart'}, {name: 'Lisa'} ]) // returns 'Bart & Lisa'
list([ {name: 'Bart'} ]) // returns 'Bart'
list([]) // returns '' Note: all the hashes are pre-validated and will only contain A-Z, a-z, '-' and '.'.