Merge branch 'new-replies-api'

Update docs to reflect replies API changes

make pagination work for comment replies

Initial work on new replies API / pagination

Add hide_posts_from_aggregates

Add in_any_local_community parameter to posts list

community_follow doesn't have a timestamp (#146)

Only allow removing moderators newer than you

Use MAIN_SEPARATOR in build script to fix build on windows

Add parameter to filter communities by follow state (#134)

Distinguish between html & text in user & community descriptions

Add note about logs to INSTALL.md

Introduce logging via log crate

This patch introduces logging via the `log` and `env_logger` crate.
All `eprintln!()` calls were replaced with `log::error!()` and all
`println!()` calls with `log::debug!()`.

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
Tested-by: Matthias Beyer <mail@beyermatthias.de>

Add link to examples for DATABASE_URL format

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

Include german translation file in LANG_MAP

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

Add german translation

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

Add links to narwhal.city and the-federation.info

Update INSTALL.md to use embedded migrations

Fix Dockerfile for migration embedding

Switch to released version of pdcm-linkify

Fix ThingLocalRef serialization