* Unit test malformed/tem responses
* Update free trust line test to cover the case where creation is actually adding the opposite trust direction to an existing account lines ledger entry
* Add unit tests for setting and removing quality on trust lines.
Migrate tests in offer-test.js to cpp/jtx. Minimally reformat existing
test code. Augment self-cross test to include partner account as well as bridged and
direct crossing.
When attempting to parse a BufferSequence as a JSON object,
if the sequence contained more than buffer, the JSON parser
would incorrectly attempt to decode each buffer as a separate
JSON object, instead of one complete object.
If the mantissas of two non-native amounts differ by less than 10, then
subtracting them leaves a result of zero. This can cause situations
where `a>b`, yet `a-b == 0`.
One consequence of this is unfunded offers were incorrectly left in
order books. The code would check if the offer would be
consumed (`amount in offer > amount needed`), assume it wouldn't be,
yet when `amount needed` was subtracted from `amount in offer` the
result was zero and the offer was unfunded. This unfunded offer
incorrectly remained on the order book.
This patch fixes this bug.
* Make HTTP(S) requests on websocket ports reply with Status page
* Fix isWebsocketUpgrade to compare case insensitive
* Make websocket upgrades with no websocket protocols configured report error
* Create unit test for unauthorized requests and the status page
