Tracebacks in First Time Wizard with no internet

[Tomas Groth]

Two small issues in 2.0.2 I stumbled upon, seems to be connected:

When rerunning the first time wizard without an internet connection, and cancelling it in the first image I get the traceback below. Found while on Archlinux.
Cancel FTW with no internet:
Traceback (most recent call last):
  File "/home/tgc/OpenLP/OpenLP-2.0.2/openlp/core/ui/firsttimeform.py", line 294, in onCancelButtonClicked
    while self.themeScreenshotThread.isRunning():
AttributeError: 'FirstTimeForm' object has no attribute 'themeScreenshotThread'

When rerunning the first time wizard while connected to a network that requires login in the browser (like in hotels, at conferences etc.) the wizard produces a traceback when trying to go through the wizard (IIRC when the first Next-button is clicked). Unfortunantly I don't have the traceback of this available. Found while on Windows Vista.