Fix: Mobile stage display now supports text version only slides

Fix: Fixed connection timeout issue when keeping Presenter open for long periods of time.

Fix: Google Slides authentication fix. Google Slides are now chosen through Google Picker, only giving Presenter access to selected presentations.

Fix: ProPresenter 7 lyrics import keeps slides in correct order
Change: Skipped slides in Google Slides will show as "skipped" in Presenter

Fix: Fixed issue with some services failing to sync, causing getting stuck on "Loading libraries"