Use InstanceName around the place

- Report in /api/ endpoint
- Display in About window
- Include in any generated barcode

InvenTree/part/templatetags/inventree_extras.py

@@ -43,6 +43,12 @@ def part_allocation_count(build, part, *args, **kwargs):
     return decimal2string(build.getAllocatedQuantity(part))
 
 
+@register.simple_tag()
+def inventree_instance_name(*args, **kwargs):
+    """ Return the InstanceName associated with the current database """
+    return version.inventreeInstanceName()
+
+
 @register.simple_tag()
 def inventree_version(*args, **kwargs):
     """ Return InvenTree version string """