Upgraded to Lemmy 0.19 Beta

Quick notes;

• Clients may not work with the beta version for now. Please log out and log in back again to test it. Please request support from client devs.
• Blur NSFW and auto expand features are part of official Lemmy now, you can find these on profile settings.
• Beta version has some bugs, please report them on the repo.
• You can now block instances with this version