EZP-22457: fixed incorrect usage of Repository::canUser()
EZP-22522: fixed using wrong class
EZP-22522: implemented createFromConnection()
EZP-22522: adapt LegacyDbHandlerFactory
EZP-22522: adapted test
Merge pull request #819 from ezsystems/fix-EZP-22457-xmltext-embed-canuser

Fix EZP-22457: XMLText uses canUser API wrong on location embeds
Merge pull request #816 from ezsystems/fix-EZP-22522-postgres-sqlite-dbhandler

Fix EZP-22522: Unable to install eZ Publish 5.3 on Postgres