refactor: remove default data from search page

Closes #151

src/assets/i18n/en.json

@@ -126,8 +126,8 @@
   "map": {
     "page": {
       "TITLE": "Map",
-      "search": {
-        "PLACEHOLDER": "Buildings, points of interests, canteens and more"
+      "search_bar": {
+        "placeholder": "Buildings, points of interests, canteens and more"
       },
       "buttons": {
         "SHOW_LIST": "Show list",
@@ -177,6 +177,10 @@
     "title": "News"
   },
   "search": {
+    "search_bar": {
+      "placeholder": "Search ..."
+    },
+    "instruction": "Start typing above to find events, persons, places, food and more ...",
     "nothing_found": "No results"
   },
   "schedule": {