**Sometimes, alphabetical sorting of Communities is a not adequate for certain Institutions. In particular, for organizations where hierarchy is of great importance.
Therefore, I propose to be able to sort communities acording to a metadata value stored in DB.
The attached code allows to order communities by a value stored in "dc.identifier.other".
Changes to /dspace-api/src/main/java/org/dspace/content/Community.java
Changes to /dspace-api/src/main/java/org/dspace/content/DSpaceObject.java
Changes to XMLUI's Administrative Aspect: