Add more user feedback (loading buttons, empty states)

software/src/locales/en.json

@@ -115,5 +115,12 @@
     "exerciseGroup3": "Exercise Group 3: Cross-Site Scripting (XSS)",
     "exercise": "Exercise {0}"
   },
-  "serverState": "Server State:"
+  "serverState": "Server State:",
+  "required": "Is required",
+  "noDigitsAllowed": "Digits are not allowed",
+  "notEnoughChars": "Too short",
+  "passwordToShort": "Password too short",
+  "onlyDigitsAllowed": "Only digits are allowed",
+  "noOrders": "No orders found",
+  "noOrdersText": "There are no orders with this account until now. Go to the basket page and order something!"
 }