Fix OS remote code execution

Fixes #6

src/app/views/project.py

@@ -64,14 +64,10 @@ class Project:
                 # Create the project directory if it doesnt exist
                 path = 'static/project' + data.projectid
                 if not os.path.isdir(path):
-                    command = 'mkdir ' + path
-                    os.popen(command)
-                    sleep(0.2)
+                    os.mkdir(path)
                 path = path + '/task' + data.taskid
                 if not os.path.isdir(path):
-                    command = 'mkdir ' + path
-                    os.popen(command)
-                    sleep(0.2)
+                    os.mkdir(path)
                 open(path + '/' + fn, 'wb').write(fileitem.file.read())
                 models.project.set_task_file(data.taskid, (path + "/" + fn))
         except: