On branch ddl

Changes to be committed:
	modified:   app.py
	modified:   templates/finish.html
	modified:   templates/index.html
Téléchargement direct d'un fichier zip puis supprime le dossier.

templates/index.html

@@ -38,7 +38,7 @@
       <div class="form-group">
         <input type="text" class="form-control" name="url5" id="url5" pattern="^https://open\.spotify\.com/(?:album|playlist|track)/[\w-]+(?:\?si=[\w-]+)?$" placeholder="Entrez l'URL d'une Piste, d'un Album ou d'une Playlist">
       </div>
-      <button type="submit" class="btn" id="download-button" onclick="startDownload()">Télécharger</button>
+      <button type="submit" class="btn" id="download-button" onclick="startDownload()">Démarrer</button>
       <button type="reset" class="btn" id="refresh-button" onclick="refreshPage()">Rafraîchir</button>
     </form>
   </div>