Merge "DB: Add img_description_id column"

diff --cc includes/installer/MssqlUpdater.php
Simple merge

diff --cc includes/installer/MysqlUpdater.php
Simple merge

diff --cc includes/installer/OracleUpdater.php
Simple merge

diff --cc includes/installer/PostgresUpdater.php
Simple merge

diff --cc includes/installer/SqliteUpdater.php
Simple merge

diff --cc maintenance/mssql/tables.sql
Simple merge

diff --cc maintenance/oracle/tables.sql
Simple merge

diff --cc maintenance/postgres/tables.sql
Simple merge

diff --cc maintenance/tables.sql
Simple merge