Change preferred calendar and Implementaion Name (#43)

* Change preferred calendar

* Change syntax

Author: r-jheltandugon

frontend/config-core-sdh-1dev.json

@@ -36,7 +36,11 @@
   "@openmrs/esm-styleguide": {
     "Brand color #1": "#2196F3",
     "Brand color #2": "#64B5F6",
-    "Brand color #3": "#1976D2"
+    "Brand color #3": "#1976D2",
+    "implementationName": "SDH",
+    "preferredCalendar": {
+      "en": "gregory"
+    }
   },
   "@openmrs/esm-login-app": {
     "logo": {