**main changes:**
- every tab now has search for featured/mine (sets, character,
animation, facial expression, objects, image panels)
- all are under the same posthog feature flag
- I've tested all tabs myself it shouldn't have any problems, except
expressions which filter engine categories is returning nothing (but
isn't that important, can be fixed later, since we only have a few
expressions currently and it's dev only)
**other small changes:**
- loading title font weight change
- typo and leading fixes
BFlat
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