(fix):Add OnInit method for the label to use on app-attribute-label

WARNING: This is a temporary fix for the labelling of data on bootstrap array on the front-end. Sall be fixed by further development on the server.

To be reviewed @cmoreau @fagneray

requested review from @fagneray

assigned to @lmenou

added 2 commits

• f8f9d886 - Add tests for attribute-label
• 1b3d77fa - Add docs on attribute-label

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approved this merge request

merged

mentioned in commit f2ed68fd