6.0

in this commit:
- enhanced css (hover border, less annoying donate highlight, checkbox width fix for mobile, more consistent color scheme)
- addition of an urgent notice (in this case it mentions all issues related to old infra being fixed)
- updated twitter picker test
- changelog for 6.0
- removed partial translations

src/test/tests.json

@@ -36,8 +36,8 @@
             "status": "redirect"
         }
     }, {
-        "name": "picker: mixed media (2 videos)",
-        "url": "https://twitter.com/taehyungsflow/status/1583411488433516544",
+        "name": "picker: mixed media (3 videos)",
+        "url": "https://twitter.com/DankGameAlert/status/1584726006094794774",
         "params": {
             "aFormat": "mp3",
             "isAudioOnly": false,