Config descriptions for custom MRF policies

Closes #2222

See merge request pleroma/pleroma!3128

- revert UserAllowPolicy description
- MRF descriptions order

Resolve "Wrong user link in Report email"

Closes #2260

See merge request pleroma/pleroma!3121

Fix title on load of Pleroma HTML, fixes #2281

Closes #2281

See merge request pleroma/pleroma!3125

Escaping in xml templates

Closes #2291

See merge request pleroma/pleroma!3126

Remove release_env

See merge request pleroma/pleroma!3124

While taking a final look at instance.gen before releasing I noticed
that the release_env task outputs messages in broken english. Upon
further inspection it seems to have even more severe issues which, in
my opinion, warrant it's at least temporary removal:
- We do not explain what it actually does, anywhere. Neither the task
 docs nor instance.gen, nor installation instructions.
- It does not respect FHS on OTP releases (uses /opt/pleroma/config even
 though we store the config in /etc/pleroma/config.exs).
- It doesn't work on OTP releases, which is the main reason it exists.
Neither systemd nor openrc service files for OTP include it.
- It is not mentioned in install guides other than the ones for Debian
and OTP releases.

Expiring mutes for users and activities

Closes #1817

See merge request pleroma/pleroma!2971

don't run  Stats GenServer updates in tests

See merge request pleroma/pleroma!2976

Add TagPolicy as default MRF

See merge request pleroma/pleroma!2834

Add ejabberd auth document

See merge request pleroma/pleroma!3074

Add a federation_status endpoint showing unreachable instances

See merge request pleroma/pleroma!3086

View a remote server's timeline

See merge request pleroma/pleroma!2713

Always return voters_count in polls

See merge request pleroma/pleroma!3120

Hide chats from muted users

Closes #2230

See merge request pleroma/pleroma!3116

favicon: Use images/pleroma_logo_vector_bg_32.png from pleroma.social

Closes #2270

See merge request pleroma/pleroma!3115

ConversationView: add current user to conversations, according to Mastodon behaviour, fix last_status.account being not filled

Closes #2217

See merge request pleroma/pleroma!3089

Closes: https://git.pleroma.social/pleroma/pleroma/-/issues/2270

Permit fetching individual reports with notes preloaded

See merge request pleroma/pleroma!3118

Ensure URLs for git repos end in .git for older git clients like on CentOS 7

See merge request pleroma/pleroma!3119

side_effects: Don’t increase_replies_count when it’s an Answer

Closes #2274

See merge request pleroma/pleroma!3114

# Conflicts:
#   lib/pleroma/web/router.ex

Use Pleroma.HTTP instead of Tesla

Closes #2275

See merge request pleroma/pleroma!3113