Changed personal number to user name

Author: Matus Kasak

src/assets/i18n/cs.json5

@@ -4394,8 +4394,8 @@
   // "loading.top-level-communities": "Loading top-level communities...",
   "loading.top-level-communities": "Načítají se komunity nejvyšší úrovně...",
 
-  // "login.form.email": "Personal number",
-  "login.form.email": "Osobní číslo",
+  // "login.form.email": "User Name",
+  "login.form.email": "Uživatelské jméno",
 
   // "login.form.forgot-password": "Have you forgotten your password?",
   "login.form.forgot-password": "Zapomněli jste své heslo?",

src/assets/i18n/en.json5

@@ -2929,7 +2929,7 @@
 
   "loading.top-level-communities": "Loading top-level communities...",
 
-  "login.form.email": "Personal number",
+  "login.form.email": "User Name",
 
   "login.form.forgot-password": "Have you forgotten your password?",