v1.1.6 - Crash-fix and QOL Release

This release attempts to solve some of the crashes that people have encountered (and which I'm of course unable to reproduce). The biggest is the crash in Library Tree when viewing by Folder which completely renders the theme inoperable. I updated to WillB's latest 1.4.0.4 library tree, with my own modifications. This should solve that issue for everyone.

There have been reports of a crash at startup related to button creation. I've attempted to rework some code so that this crash doesn't happen, but I have no idea if it actually fixes the problem or not.

I removed all the stupid timezone crap from the theme, and drastically simplified how dates are handled, particularly in the timeline. If you're using foo_enhanced_playcount, you'll need to upgrade to the latest version in foobar otherwise the timeline will look funny. I also added some extra metadata fields when using foo_youtube. If there are other components that expose their own metadata properties like that one, please let me know and I'll add them to the theme.