Remove spaces from the list of schema list of metadata import restric…

…tions so that "iso19115-3.2018, dublin-core" will also work.

Also updated the admin documentation so that it is clear that it expect to get a comma separated list.

core/src/main/java/org/fao/geonet/kernel/datamanager/base/BaseMetadataManager.java

@@ -582,7 +582,11 @@ public AbstractMetadata insertMetadata(ServiceContext context, AbstractMetadata
 
         // Check if the schema is allowed by settings
         String mdImportSetting = settingManager.getValue(Settings.METADATA_IMPORT_RESTRICT);
-        if (mdImportSetting != null && !mdImportSetting.equals("")) {
+        if (mdImportSetting != null) {
+            // Remove spaces from the list so that "iso19115-3.2018, dublin-core" will also work
+            mdImportSetting = mdImportSetting.replace(" ", "");
+        }
+        if (!StringUtils.isBlank(mdImportSetting)) {
             if (!newMetadata.getHarvestInfo().isHarvested() && !Arrays.asList(mdImportSetting.split(",")).contains(schema)) {
                 throw new IllegalArgumentException("The system setting '" + Settings.METADATA_IMPORT_RESTRICT
                     + "' doesn't allow to import " + schema

web-ui/src/main/resources/catalog/locales/en-admin.json

@@ -884,7 +884,7 @@
     "metadata/workflow/forceValidationOnMdSave-help": "When the metadata is saved force validation check",
     "metadata/import": "Metadata import",
     "metadata/import/restrict": "Restrict import to schemas",
-    "metadata/import/restrict-help": "List of all allowed schemas for metadata to be imported. If the metadata schema is not allowed, then the import is not done. No value means all schemas allowed.",
+    "metadata/import/restrict-help": "Comma separated list of all allowed schemas for metadata to be imported. If the metadata schema is not allowed, then the import is not done. No value means all schemas allowed.",
     "metadata/import/userprofile": "Minimum user profile allowed to import metadata",
     "metadata/import/userprofile-help": "Minimum user profile allowed to import metadata (Editor, Reviewer or Administrator). The default value is Editor.",
     "metadata/delete": "Metadata delete",