Merge branch 'dev'

- Removed the placeholder text from the email input field in the login form for a cleaner user interface.

app/templates/login.html

@@ -11,7 +11,7 @@
     <form method="post" action="/login" class="form-grid">
         <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
         <label>E-Mail
-            <input type="email" name="email" required autocomplete="username" placeholder="name@firma.de">
+            <input type="email" name="email" required autocomplete="username">
         </label>
         <label>Passwort
             <input type="password" name="password" required autocomplete="current-password">