Without uno installed you can't save settings as the presentationtab.save() doesn't adequately protect itself against this possiblity
--- Exception Traceback ---
Traceback (most recent call last):
File "/home/jt/projects/openlp/openlp/trivialfixes/openlp/core/ui/settingsform.py", line 91, in accept
self.settingsTabWidget.widget(tabIndex).save()
File "/home/jt/projects/openlp/openlp/trivialfixes/openlp/plugins/presentations/lib/presentationtab.py", line 121, in save
controller.kill()
File "/home/jt/projects/openlp/openlp/trivialfixes/openlp/plugins/presentations/lib/impresscontroller.py", line 184, in kill
desktop = self.get_uno_desktop()
File "/home/jt/projects/openlp/openlp/trivialfixes/openlp/plugins/presentations/lib/impresscontroller.py", line 123, in get_uno_desktop
context = uno.getComponentContext()
NameError: global name 'uno' is not defined
