* Update roundcube install instructions
Main changes:
- Use separate database for roundcube
- Download mime.types once and not on every container start
- Use mailcow API for password change from roundcube instead of direct database access
- Use non-TLS connection instead of TLS with disabled certificate check
- Upgrade CardDAV instructions to use RCMCardDAV v5 which also includes rediscovery of new/removed server-side addressbooks
- Instructions for forwarding client IP to dovecot (main benefit: netfilter container acts on excessive failed logins)
* Improvements to roundcube setup
- Change tarball extraction command, since the transform flag also messed up symlink targets
- Slight change in database creation (aligned with roundcube INSTALL docs)
- Change roundcube cipher_method to a stronger than the default one, and allow some symbols in the generated passphrase
- Expose only the public_html subdirectory of roundcube
- Include update of the composer dependencies in the installation steps
- Create scheduled job for database housekeeping
- Uninstall instructions
* Add missing escapes
* Another syntax fix
* Roundcube: Avoid access to PHP scripts in sensitive directories
The sensitive directories should not contain PHP scripts in the first
place, but just as a safeguard we disable access to nginx on a
filesystem level. (NGINX and PHPFPM run under different UIDs in
mailcow).
* Roundcube: Migration instructions
* Update third_party-roundcube.en.md
* Address review findings
* Adress review findings and translate to German
* Fix typos
* Update Roundcube docs page going from 1.5 to 1.6
This is to update the docs page to install or upgrade to Roundcube 1.6.0 along with the needed 'sed' commands to make any necessary config changes going from 1.5 to 1.6
* Decline auto local config fix
If you allow the update tool to upgrade your config file, it doesn't do it correctly, so we're better of doing this our self with 'sed'
* Update roundcube 1.5 to 1.6 DE instructions
* 'smtp_server' to 'smtp_host' in config example
