- Define set of editable offer payload fields in MutableOfferPayloadFields.

- Move bulk of EditOfferDataModel#onPublishOffer logic to OfferUtil.

- Add editOffer to GrpcOffersService, CoreApi, CoreOffersService.

- Set editOffer call rate meter to 1 / minute.

- Use new EditOfferValidator to verify editOffer params OK.

- Adust getMyOffer(s) rpc impl and OfferInfo model to use OpenOffer
  for accessing activation state and trigger price.

Reduces size of GrpcClient while allowing for additional bot-friendly
variations of the new grpc editOffer method.

Support for editing BSQ offers is in place, but will be added
in another PR.

Optionally displaying an ENABLED column in CLI side getoffer output
depends on the value of offer.isMyOffer, which is passed via new
boolean arguments to the trade & offer pojo builders.

BSQ offers are fixed-price only.  This change blocks an
attempt to change an altcoin offer to a margin price based
offer, or set a trigger price.

And log CLI's getoffer output to see getoffer formatting -- after adding
new ENABLED and TRIGGER-PRICE columns.

…ffer-method

And make sure function is not duplicated CLI side logic.

Avoid inconsistent CLI output decimal formats across different
systems' default locales.

Use LinkedHashSet to maintain NetworkEnvelope ordering when Connection#onBundleOfEnvelopes
calls listeners.

Connection#onBundleOfEnvelopes builds a set from an ordered list of NetworkEnvelopes,
then calls listeners during set iteration.  The envelope list ordering is lost if a
HashSet is built, but maintained by switching to a LinkedHashSet.

Losing the envelope ordering becomes a problem if the peer receives a RemoveDataMessage
and an AddDataMessage in the same batch of envelopes, and relays them to listeners
in the wrong (random) order.  For example, an API 'editoffer' call may result in the
edited offer being added, then immediately remove from their UI's offer book.

This reverts commit add6536.