Small Fixes including PR #241

- Fixes genres spacer for media stories
- Fixes hover link color on anime page
- Fixes PR #241 users/*/reviews css

Review: f0f6b36 Hide trailer link when no trailer available. I am not sure what the relationship between models/anime.js and models/full_anime.js is and how they interact. The property that this function in anime.js relies on is defined in full_anime.js. Does anything need to be changed for this to work?