Debug of config

* fixed TypeError in settings which can be triggered when the settings
  are opened for the first time.

prasopes/config.py

@@ -30,7 +30,7 @@ def pathsearch(text, value, config):
 
 def pathlineconf(label, value, config):
     """adds generic filepath config line"""
-    textfield = QtWidgets.QLineEdit(config.value(value))
+    textfield = QtWidgets.QLineEdit(str(config.value(value)))
     textfield.editingFinished.connect(lambda: config.setValue(
         value, textfield.text()))
     browse_button = QtWidgets.QPushButton("Browse..")
@@ -45,7 +45,7 @@ def pathlineconf(label, value, config):
 
 def posintvarconf(label, value, config):
     """adds generic positive integer config line"""
-    textfield = QtWidgets.QLineEdit(config.value(value))
+    textfield = QtWidgets.QLineEdit(str(config.value(value)))
     textfield.editingFinished.connect(lambda: config.setValue(
         value, textfield.text()))
     validator = QtGui.QIntValidator()