1. Extract out into several methods.
2. Add more comments describing the data and the shape of the data.

Still need final links all over the place.

This table shows the percentage of users who registered in the last
twelve months, who last signed in during or later than each of those
twelve months, by month.

It is only enabled when the usage ping is enabled, and the page also
shows pretty-printed usage ping data.

The cohorts table is generated in Ruby from some basic SQL queries,
because performing the gap-filling and running sums needed in both MySQL
and Postgres is painful.

adds timeout option to push mirrors

Closes #1907

See merge request !1439

CE -> EE port: System notes meta data

See merge request !1526

Port of '23674-simplify-milestone-summary' to EE

See merge request !1511

Fix custom protected branch pattern jumping scroll position to top -- EE merge edition

Closes gitlab-ce#30149

See merge request !1523

[ci skip]

[ci skip]

Port of scrollable-secondary-tabs to EE

See merge request !1534

As per GitLab 9.0 LFS is supported in GEO

See merge request !1530

Include JavaScript test coverage in coverage badge

See merge request !1501

Port of "API: Make the /notes endpoint work with noteable iid instead of id" to EE

Closes #1875

See merge request !1518

Merge branch '1961-number-of-required-approvals-must-not-be-reset-when-changing-assignee' into 'master'

Resolve "Number of required approvals MUST NOT be reset when changing assignee"

Closes #1961

See merge request !1515

CE Upstream - Monday

Closes gitlab-ce#29897

See merge request !1517

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/30149

Use more semantic `<button>` element and prevent the form from
submitting.

Conflicts:
	app/assets/javascripts/protected_branches/protected_branch_dropdown.js
	app/assets/stylesheets/framework/dropdowns.scss
	app/assets/stylesheets/pages/projects.scss

[ci skip]

[ci skip]

Don't reset the approval count set on an MR when it's higher than the
project default, and we're not passing an `approvals_before_merge`
param.

Signed-off-by: Rémy Coutable <remy@rymai.me>