Random Ghost-Admin Travis failures

[kevinansfield]

Collecting a list of random failures on Travis so that we can make the test suite more reliable. If you see any random failure on Travis please add it here or bump the number of times seen so that we can prioritise.

As for cleaning these up, if no easy solution presents itself it will probably be a case of making a judgement call as to whether the test needs to exist.

x7 (skipped as of TryGhost/Admin@7d85737)

not ok 1506 Firefox 64.0 - [125 ms] - Integration: Component: gh-psm-tags-input updateTags destroys new tag records when not selected
    ---
        message: >
            '#ember-basic-dropdown-content-ember17494 Add "New"...' is not a valid selector

not ok 373 Chrome 71.0 - [93 ms] - Integration: Component: gh-psm-tags-input updateTags destroys new tag records when not selected
    ---
        message: >
            Failed to execute 'querySelectorAll' on 'Document': '#ember-basic-dropdown-content-ember17647 Add "New"...' is not a valid selector.
        stack: >
            Error: Failed to execute 'querySelectorAll' on 'Document': '#ember-basic-dropdown-content-ember17647 Add "New"...' is not a valid selector.
                at selectChoose (http://localhost:7357/assets/tests.js:9966:35)

x5 (skipped as of TryGhost/Admin@7d85737)

not ok 1247 Firefox 64.0 - [654 ms] - Acceptance: Content as admin sorts tags filter alphabetically
    ---
        message: >
            options[0] is undefined

x4 (skipped as of TryGhost/Admin@29d8755)

not ok 1499 Firefox 64.0 - [675 ms] - Integration: Component: gh-profile-image throttles gravatar loading as email is changed
    ---
        message: >
            .gravatar-img background still not changed before debounce timeout: expected div#account-image.gravatar-img[style="background-image: url(//www.gravatar.com/avatar/55502f40dc8b7c769880b10874abc9d0?s=100&d=404); display: block"] to have an attribute 'style' with the value 'display: none', but the value was 'background-image: url(//www.gravatar.com/avatar/55502f40dc8b7c769880b10874abc9d0?s=100&d=404); display: block'

x2 (skipped as of TryGhost/Admin@29d8755)

not ok 939 Chrome 71.0 - [undefined ms] - Unit: Component: gh-notification closes notification when animationend event is triggered
    ---
        message: >
            Uncaught AssertionError: expected false to be true

x2 (skipped as of TryGhost/Admin@29d8755)

not ok 292 Chrome 71.0 - [undefined ms] - Integration: Component: gh-file-uploader displays upload progress
    ---
        message: >
            Uncaught AssertionError: expected 0 to be above 0

x1 (skipped as of TryGhost/Admin@29d8755)

not ok 1529 Firefox 64.0 - [undefined ms] - Integration: Component: gh-task-button appears disabled whilst running
    ---
        message: >
            uncaught exception: AssertionError: ended class: expected button#ember17882.appear-disabled.ember-view not to have class 'appear-disabled' (:0)