- Display ansi colors on console commands
- Use tee + grep to preserve log output
- Switch to en_GB for default lang

 - Use utf8mb4 as default charset for fresh installation
 - utf8mb4 migration command
 - warn for collation mix on migration
 - Force ROW_FORMAT = Dynamic on fresh install
 - Add warning on central page if some tables are not migrated

* Fix default entity in CommonDBRelation

* Add default value to getActiveEntity

Signed-off-by: Thierry Bugier <tbugier@teclib.com>

fixes #8533

* Init active tab on display

* Use result from defineTabs instead of hardcoded $main

* Fix IMAP auth without login source dropdown

* Check getFromDBByCrit result

* Fix email attachement decoding logic

* Prevent charset comparison to fail due to case sensitivity

* Do not try to convert contents if source charset is unknown