Add title for login page

src/views/login.ecr

@@ -1,10 +1,14 @@
+<% content_for "header" do %>
+<title>Login - Invidious</title>
+<% end %>
+
 <div class="pure-g">
     <div class="pure-u-1 pure-u-md-1-5"></div>
     <div class="pure-u-1 pure-u-md-3-5">
         <div class="h-box">
             <form class="pure-form pure-form-stacked" action="/login" method="post">
                 <fieldset>
-                    <legend>Login for Google</legend>
+                    <legend>Login to Google</legend>
 
                     <label for="email">Email</label>
                     <input class="pure-input-1" name="email" type="email" placeholder="Email">