closes #7614

This was a leftover from rails_admin which was removed in #7440.

closes #7597

closes #7595

closes #7583

closes #7600

closes #7599

closes #7592

Fixes #7476

closes #7591

Fixes #7499

According to https://msdn.microsoft.com/en-us/library/dn629259(v=vs.85).aspx,
“the minimum-scale, maximum-scale, and initial-scale properties are currently
unsupported for Internet Explorer for Windows Phone“.

For further information on the viewport properties see
https://drafts.csswg.org/css-device-adapt/#viewport-meta

closes #7589

closes #7585

closes #7550

closes #7580

And cleanup old reshares with deleted root posts

closes #7578

closes #7576

Fixes #7424

closes #7575

closes #7568

Fixes #7563

closes #7566

closes #7579

This was in all stack traces, which confused people ...

We currently only support IE11, so the version check was already old
again ...

When we break old browser versions, we don't check that for other
browsers. So older IE browser just break, like very other older browser
too.

closes #7557

closes #7551

closes #7530

[ci skip]

closes #7465

closes #7446

closes #7295

closes #7473

closes #6589

fixes #7195

closes #7455

[ci skip]

Fixes #7421

closes #7447

This changes links from /posts/:id to /posts/:guid where the links are
not clicked very often. ID search is faster than guid search so we can't
change it everywhere, but these links are not very useful for clicking,
but can be used for easier guid look up.

closes #7453

Fixes #7363

closes #7452

Breaking a public key of a person can be used to "block" receiving posts
from this person on the pod. So we should handle that case better and
not just trigger many retries for something that will fail again.

closes #7448