Replace custom attributes with valid w3c attributes

[core23]

According to w3c custom attributes should start with data-*

• Update https://github.com/sonata-project/SonataDoctrineMongoDBAdminBundle
• Update https://github.com/sonata-project/SonataDoctrineORMAdminBundle
• Update https://github.com/sonata-project/SonataDoctrinePhpcrAdminBundle
• Update https://github.com/sonata-project/SonataPropelAdminBundle

Refs #3312

[stale]

Is this still relevant? If so, what is blocking it? Is there anything you can do to help move it forward?

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[VincentLanglet]

Closing due to lack of interest