Create OSHADynamicMigration class to be extended by nodes migrations refs #2711
Refactored articles migration to extend OSHADynamicMigration refs #2711
Refactored blog migration to extend OSHADynamicMigration refs #2711
Refactored calls  migration to extend OSHADynamicMigration refs #2711
Refactored case study  migration to extend OSHADynamicMigration refs #2711
Refactored jobs migration to extend OSHADynamicMigration refs #2711
Refactored news migration to extend OSHADynamicMigration refs #2711
Refactored press release migration to extend OSHADynamicMigration refs #2711
Refactored publications migration to extend OSHADynamicMigration refs #2711
Merge pull request #123 from dragos-dumi/2711_migrate_multilingual_bug

2711 migrate multilingual bug