dev-branch: saveNoteAs Excpetion

[ckolumbus]

Traceback (most recent call last):
  File "mikidown\mikiwindow.py", line 649, in saveNoteAs
    if not QtCore.QFileInfo(fileName).suffix():
TypeError: arguments did not match any overloaded call:
  QFileInfo(): too many arguments
  QFileInfo(str): argument 1 has unexpected type 'tuple'
  QFileInfo(QFile): argument 1 has unexpected type 'tuple'
  QFileInfo(QDir, str): argument 1 has unexpected type 'tuple'
  QFileInfo(QFileInfo): argument 1 has unexpected type 'tuple'