translate 'Login' button caption

Author: Alexander Smishlajev

templates/classic/html/page.html

@@ -78,7 +78,7 @@ <h2><span metal:define-slot="body_title">body title</span></h2>
     <b i18n:translate="">Login</b><br>
     <input size="10" name="__login_name"><br>
     <input size="10" type="password" name="__login_password"><br>
-    <input type="submit" name="@action" value="Login"><br>
+    <input type="submit" name="@action" value="Login" i18n:attributes="value"><br>
     <span tal:replace="structure request/indexargs_form" />
     <a href="user?@template=register"
        tal:condition="python:request.user.hasPermission('Web Registration')"

templates/minimal/html/page.html

@@ -26,7 +26,7 @@
    <form method="POST" action="">
     <input size="10" name="__login_name"><br>
     <input size="10" type="password" name="__login_password"><br>
-    <input type="submit" name="@action" value="login">
+    <input type="submit" name="@action" value="Login" i18n:attributes="value">
     <span tal:replace="structure request/indexargs_form" />
    </form>
    <a tal:condition="python:request.user.hasPermission('Web Registration')"