use website url_base scheme/protocol instead of http

tracim/tracim/controllers/workspace.py

 
 from tracim.model.serializers import Context, CTX, DictLikeClass
 
+from urllib.parse import urlparse
 
 class UserWorkspaceRestController(TIMRestController):
 
 
         dictified_workspace = Context(CTX.WORKSPACE).toDict(workspace, 'workspace')
         webdav_url = CFG.get_instance().WSGIDAV_CLIENT_BASE_URL
+        website_protocol = urlparse(CFG.get_instance().WEBSITE_BASE_URL).scheme
 
         return DictLikeClass(
             result=dictified_workspace,
             fake_api=fake_api,
             webdav_url=webdav_url,
+            website_protocol = website_protocol,
             show_deleted=show_deleted,
             show_archived=show_archived,
         )

tracim/tracim/templates/workspace/getone.mak

             <div class="col-md-6">
                 <div class="input-group">
                     <span class="input-group-addon" style="width: 8em;"><i class="fa fa-fw fa-windows"></i> Windows</span>
-                    <div class="form-control webdavconfig__input">http://${webdav_url}</div>
+                    <div class="form-control webdavconfig__input">${website_protocol}://${webdav_url}</div>
                 </div>
                 <p></p>
                 <div class="input-group">