Added PTB Translation of emails and some pages

Now the main page, item page and e-mails are translated
into Brazilian Portuguese

app/Mail/ItemAvailable.php

@@ -32,7 +32,11 @@ class ItemAvailable extends Mailable
      */
     public function build()
     {
-        return $this->subject($this->item->name . ' is available!')
-            ->markdown('emails.itemAvailable');
+        return $this->subject(
+            \Lang::getFromJson(
+                ':itemname is available!', 
+                ['itemname' => $this->item->name]
+            )
+        )->markdown('emails.itemAvailable');
     }
 }

app/Mail/UserWaiting.php

@@ -34,7 +34,14 @@ class UserWaiting extends Mailable
      */
     public function build()
     {
-        return $this->subject($this->waitingUser . ' wants to use ' . $this->item->name)
-            ->markdown('emails.userWaiting');
+        return $this->subject(
+            \Lang::getFromJson(
+                ':waitinguser wants to use :itemname', 
+                [
+                    'waitinguser' => $this->waitingUser, 
+                    'itemname' => $this->item->name
+                ]
+            )
+        )->markdown('emails.userWaiting');
     }
 }

app/Mail/Welcome.php

@@ -2,6 +2,7 @@
 
 namespace App\Mail;
 
+use \Lang;
 use \App\User;
 use Illuminate\Bus\Queueable;
 use Illuminate\Mail\Mailable;
@@ -30,6 +31,6 @@ class Welcome extends Mailable
      */
     public function build()
     {
-        return $this->markdown('emails.welcome');
+        return $this->subject(Lang::getFromJson('Welcome'))->markdown('emails.welcome');
     }
 }