Misc minor corrections in component attribute and record managers
New error handling strategy for attribute update command – an exception in a chunk does not stop the process, but only prints an exception.
Add block for indices in the createTable template
Implement UpdateCommandAlias.php to be inherited by commands in custom namespaces
Improve error ignoring in Datasets/Components/Attributes/UpdateCommand.php
Add command-description into UpdateCommandAlias.php
Add ability to copy only missing records in ph:datasets:components:records:copy