A tablesample count executes in two phases:
* Estimate table sizes based on reltuples.
* Based on the estimate:
  * If the table is considered 'small', execute an exact relation count.
  * Otherwise, count on a sample of the table using TABLESAMPLE.

The size of the sample is chosen in a way that we always roughly scan
the same amount of rows (see TABLESAMPLE_ROW_TARGET).

The goal is to reflect separation of concern also in specs.

Fix line height of numbers in file blame view.

Closes #54048

See merge request gitlab-org/gitlab-ce!23090

Fix "protected branches only" checkbox not set properly at init

Closes #53515

See merge request gitlab-org/gitlab-ce!23409

Resolve "Filter by `None`/`Any` for labels in issues/mrs/boards"

Closes #52370

See merge request gitlab-org/gitlab-ce!23111

Fix deprecation: render :text is deprecated because it does not actually render…

See merge request gitlab-org/gitlab-ce!23425

Resolve "unstar icon button is misaligned"

Closes #53400

See merge request gitlab-org/gitlab-ce!23444

The `only_protected_branches` value was being enabled by default
even though the checkbox was default off. In EE, this wasn't a
problem because there was EE-specific code to update the
entire form.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/53515

Fixes tooltip overflowing in mini pipeline

Closes #54514

See merge request gitlab-org/gitlab-ce!23486

Fix secondary nav dropdown menu styling in tablet and mobile screens

Closes #54648

See merge request gitlab-org/gitlab-ce!23446

Update Dependency Scanning report fixtures

See merge request gitlab-org/gitlab-ce!23460

Update CONTRIBUTING.md: style guide link

See merge request gitlab-org/gitlab-ce!23481

[ci skip]

CE Port of "Add empty and disabled web terminal tab"

See merge request gitlab-org/gitlab-ce!23496

Sync content with EE fixtures

Reduces CE to EE differences

See merge request gitlab-org/gitlab-ce!23452

Redesign of MR header sections (CE Port)

See merge request gitlab-org/gitlab-ce!23465

Add echo so that we know which branch was taken

See merge request gitlab-org/gitlab-ce!23499

Fix unrelated deployment status in MR widget

Closes #54125

See merge request gitlab-org/gitlab-ce!23175

Update architecture.md

See merge request gitlab-org/gitlab-ce!23430

HTTPS for JupyterHub installation

See merge request gitlab-org/gitlab-ce!23479

reorder notification settings by noisy-ness

See merge request gitlab-org/gitlab-ce!23490

Updated Katex "Supported Functions" link

See merge request gitlab-org/gitlab-ce!23343

Change auto devops banner link path

Closes #54689

See merge request gitlab-org/gitlab-ce!23476

commit 04b06a2293fa12660a9c213a9db27fe90b83248b
Merge: d580841d4ed a445aa0a
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Mon Dec 3 10:51:55 2018 +0900

    Merge branch 'master-ce' into fix-mr-widget-unrelated-deployment-status

commit d580841d4ed944f01e6417fa77842826843b6a04
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Fri Nov 30 18:11:04 2018 +0900

    Add environment to all_models.yml

commit 689fbe2699a3adf10804312e680fa336e4560eaf
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Fri Nov 30 17:00:35 2018 +0900

    Proper way to get uniq relationship

commit c0733c6ecd535a6a1b6243080a2226836890f479
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Fri Nov 30 16:20:40 2018 +0900

    Revert build change

commit 19dc55a8fe6e0fa575858d51144516b7fb0120de
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Fri Nov 30 16:19:18 2018 +0900

    Add uniq option

commit 0a6995f311c09b453fd0aecff2f6052de38efc27
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Fri Nov 30 16:14:30 2018 +0900

    Drop persisted_environment

commit 3f68fc783b0ee0d66e03de6d979616c4c4892118
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Nov 28 13:59:04 2018 +0900

    Return empty array if pipeline is nil

commit 73801c5c3d06339e38dce7461a71285bcdbb8f45
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Tue Nov 27 16:34:47 2018 +0900

    Add changelog

commit d461699abf2835cc51949a5138e829628209dd6d
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Tue Nov 27 16:32:20 2018 +0900

    Squashed commit of the following:

    commit 77ab5259605e217a39b04d2cea6204277e42d2b5
    Merge: 7ac1ed50612 2ee8c40f
    Author: Shinya Maeda <shinya@gitlab.com>
    Date:   Tue Nov 27 16:31:07 2018 +0900

        Merge branch 'master-ce' into fix-mr-widget-unrelated-deployment-status

    commit 7ac1ed50612620df6408220b0a7cfcb626a04c48
    Merge: 49ba5c5aeff b55aeca2
    Author: Shinya Maeda <shinya@gitlab.com>
    Date:   Mon Nov 26 20:01:43 2018 +0900

        Merge branch 'master-ce' into fix-mr-widget-unrelated-deployment-status

    commit 49ba5c5aeff3efee7b7498d443372021c3f4f8b5
    Merge: aa3fd0ff9e8 fbbe5ccd
    Author: Shinya Maeda <shinya@gitlab.com>
    Date:   Mon Nov 26 15:27:36 2018 +0900

        Merge branch 'master-ce' into fix-mr-widget-unrelated-deployment-status

    commit aa3fd0ff9e8a418a233ebaa60b38c081cab50099
    Author: Shinya Maeda <shinya@gitlab.com>
    Date:   Tue Nov 20 18:28:53 2018 +0900

        Fix static analysis

    commit 7afe5f37003869a73dbb297229f8533f78b82684
    Merge: e65b9580ff4 8a581d53
    Author: Shinya Maeda <shinya@gitlab.com>
    Date:   Tue Nov 20 18:27:33 2018 +0900

        Merge branch 'master-ce' into fix-mr-widget-unrelated-deployment-status

    commit e65b9580ff422359113e1a4e37c212f7b13aba4d
    Author: Shinya Maeda <shinya@gitlab.com>
    Date:   Mon Nov 19 17:59:48 2018 +0900

        Ignore deployments from project import/export

    commit 9eb4ddab8415c1ef61a3c646bdc4602bcf4ebe24
    Author: Shinya Maeda <shinya@gitlab.com>
    Date:   Mon Nov 19 16:26:00 2018 +0900

        Add memoization

    commit 57f0bea3aaaa07b75d18e52068c532277350cda0
    Author: Shinya Maeda <shinya@gitlab.com>
    Date:   Mon Nov 19 16:21:39 2018 +0900

        Fix unrelated deployment status in MR widget

slightly improve readability

See merge request gitlab-org/gitlab-ce!23466