[pyqt/*] fix formatting

rouge doesn't work with uppercase language names, also cleaned up whitespace

de-de/pyqt-de.html.markdown

@@ -51,7 +51,7 @@ müssen wir anfangen zusätzliche Elemente zu bauen.
 Hier zeigen wir wie man eine Dialog Popup Box einführt.
 Diese ist nützlich, um den Benutzer eine Entscheidung zu bestätigen oder um Informationen anzuzeigen.
 
-```Python 
+```python
 import sys
 from PyQt4.QtGui import *
 from PyQt4.QtCore import *

es-es/pyqt-es.html.markdown

@@ -44,7 +44,7 @@ if __name__ == '__main__':
 Para poder hacer uso de las funciones más avanzades en **pyqt** necesitamos agregar elementos adicionales.
 Aquí mostramos cómo introducir una caja de diálogo popup, útil para permitir al usuario confirmar su decisión o para brindarnos información.
 
-```Python 
+```python
 import sys
 from PyQt4.QtGui import *
 from PyQt4.QtCore import *

fr-fr/pyqt-fr.html.markdown

@@ -47,7 +47,7 @@ if __name__ == '__main__':
 Pour obtenir certaines des fonctionnalités les plus avancées de **pyqt** nous devons commencer par chercher à construire des éléments supplémentaires.
 Ici nous voyons comment introduire une boîte de dialogue popup, utile pour demander une confirmation à un utilisateur ou fournir des informations.
 
-```Python 
+```python
 import sys
 from PyQt4.QtGui import *
 from PyQt4.QtCore import *

id-id/pyqt-id.html.markdown

@@ -15,7 +15,7 @@ lang: id-id
 
 Tulisan ini diadaptasi dari **Intro Qt untuk C++** oleh [Aleksey Kholovchuk](https://github.com/vortexxx192). Kode-kode yang tertulis di sini akan menghasilkan fungsionalitas yang sama. Bedanya, versi ini dibangun menggunakan **PyQt**!
 
-```Python
+```python
 import sys
 from PyQt4 import QtGui
 
@@ -45,7 +45,7 @@ if __name__ == '__main__':
 Untuk menunjukkan beberapa fitur yang lebih canggih di **PyQt**, kita akan membangun elemen tambahan.
 Di sini, kita akan membuat Kotak Popup Dialog, yang berguna untuk meminta pengguna untuk mengkonfirmasi keputusan atau untuk menampilkan informasi.
 
-```Python 
+```python
 import sys
 from PyQt4.QtGui import *
 from PyQt4.QtCore import *

it-it/pyqt-it.html.markdown

@@ -47,7 +47,7 @@ if __name__ == '__main__':
 Per ottenere alcune delle funzionalità più avanzate in **pyqt**, dobbiamo iniziare a cercare di creare elementi aggiuntivi.
 Qui mostriamo come creare una finestra popup di dialogo, utile per chiedere all'utente di confermare una decisione o fornire informazioni
 
-```Python 
+```python
 import sys
 from PyQt4.QtGui import *
 from PyQt4.QtCore import *

pt-br/pyqt-pt.html.markdown

@@ -54,7 +54,7 @@ outros elementos.
 Aqui mostraremos como criar uma janela popup, muito útil para perguntar ao
 usuário qual decisão tomar ou exibir alguma informação.
 
-```Python 
+```python
 import sys
 from PyQt4.QtGui import *
 from PyQt4.QtCore import *

pyqt.html.markdown

@@ -44,7 +44,7 @@ if __name__ == '__main__':
 In order to get some of the more advanced features in **pyqt** we need to start looking at building additional elements.
 Here we show how to introduce a dialog popup box, useful for asking the user to confirm a decision or to provide information.
 
-```Python 
+```python
 import sys
 from PyQt4.QtGui import *
 from PyQt4.QtCore import *

ru-ru/pyqt-ru.html.markdown

@@ -47,7 +47,7 @@ if __name__ == '__main__':
 обратить внимание на создание дополнительных элементов. Ниже представлено создание всплывающего диалогового окна, которое просит пользователя подтвердить его решение или предоставить какую-либо
 информацию.
 
-```Python 
+```python
 import sys
 from PyQt4.QtGui import *
 from PyQt4.QtCore import *

zh-cn/pyqt-cn.html.markdown

@@ -44,7 +44,7 @@ if __name__ == '__main__':
 
 为了运用 pyqt 中一些更高级的功能，我们需要开始学习使用其他控件。下文演示了如何弹出对话框，该对话框在用户确认操作或输入信息等情况下经常用到。
 
-```Python 
+```python
 import sys
 from PyQt4.QtGui import *
 from PyQt4.QtCore import *