bugs with patches added by gaia-autolander are not displayed on "to check in"or "to fix" tabs after r+

we started to use [Autolander](https://bugzilla.mozilla.org/user_profile?login=bug.autolander%40gmail.com) for gaia but bugzilla-todos doesn't handle it properly.

if I have a bug assigned to myself and Autolander creates the pull request, the bug disappears from the bugzilla todos app after `r+`, since it considers that Autolander is the responsible for doing the check-in - the correct behavior would be to keep the assignee as the responsible for the check-in.

[Autolander documentation on MDN](https://developer.mozilla.org/en-US/Firefox_OS/Developing_Gaia/Submitting_a_Gaia_patch#Easy_patch_submission_with_Autolander)

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**edit:** the bug does show up on "to nag" until reviewer `r+` it.