Added Articles migration
Added Article migration to install.sh & update.sh
Added some functions in utils.api.inc
Fixed typo in migration file
Refactored item and list classed
refs #2611: Write tests for publications paths
refs #2612: Wrote test for news paths
refs #2580: Add old path as alias for publications
Remove -v option from tests
Added tests for Article migration
refs #2580: Improved the filtration of path in related items
refs #2580: Add related publications mapping and uid system refference to stubs
Merge pull request #67 from razvan-tache/task_2611

Task 2611
Merge pull request #66 from eugenst/2628_migration

refs #2628: Added Article migration