Update de_DE.lang

1. I was actually surprised I was able to translate roughly 50% of the references in the version check.

2. "Flügel Tiara" <-- See https://github.com/Vazkii/Botania/commit/d8e1f4ca3b24f60e67b8e9461cc443be0498b882#commitcomment-6526094 and https://github.com/Vazkii/Botania/commit/0453eeb28a8243a10c643df6e9ef4b4029968f2c#commitcomment-6526217 for comments.