Code review comment for lp:~googol-deactivatedaccount/openlp/bug-900399

Andreas, my apologies, I didnt' explain myself well enough. What I meant by changing those "getMediaManagerItem" to "createMediaManagerItem" was not just renaming the methods, but actually doing the assignment inside the method, as opposed to externally.

i.e. instead of:

    if self.settings_tab_class:
        return self.settings_tab_class(parent, self.name, ...

do this:

    if settings_tab_class:
        self.settings_tab = self.settings_tab_class(parent, self.name, ...