Add cabinet labels as search field for documents and document pages.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/cabinets/apps.py

@@ -9,6 +9,7 @@ from common import (
     MayanAppConfig, menu_facet, menu_main, menu_multi_item, menu_object,
     menu_sidebar
 )
+from documents.search import document_page_search, document_search
 from rest_api.classes import APIEndPoint
 
 from .links import (
@@ -64,6 +65,14 @@ class CabinetsApp(MayanAppConfig):
             )
         )
 
+        document_page_search.add_model_field(
+            field='document_version__document__cabinets__label',
+            label=_('Cabinets')
+        )
+        document_search.add_model_field(
+            field='cabinets__label', label=_('Cabinets')
+        )
+
         menu_facet.bind_links(
             links=(link_document_cabinet_list,), sources=(Document,)
         )