Don't log api token, log headers instead

[nurazem]

No description provided.

[billforward-alex]

Unfortunately — in the STDOUT Ruby logger of Ruby 1.8.7 — objects converted to strings look absolutely horrendous:

I, [2016-04-06T18:35:01.540179 #28949]  INFO -- : headers: acceptapplication/jsonAuthorizationBearer NOPE-NOPE-NOPE

I wrapped it with a JSON.pretty_generate:

I, [2016-04-06T18:31:37.838949 #28786]  INFO -- : headers: {
  "accept": "application/json",
  "Authorization": "Bearer NOPE-NOPE-NOPE"
}

This has been pushed with:
933b3a0

I have integrated these changes manually.

[nurazem]

@billforward-alex Thanks for taking care of this