make validators an Object instead of array

[fedekunze]

we should make delegates.delegates an object: {address: validatorObject}

Originally posted by @fedekunze in #1860

[jbibla]

can you include an explanation of why?

thankyou.thankyou

[faboweb]

We are doing this for most of the look up lists as it is easier to read querying for one element in this way:

Array (list):

list.find(item => item.key === keyIAmLookingFor)

Object (dictionary):

dictionary[keyIAmLookingFor]

[faboweb]

See also #1708

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.