Enhance file detail activity

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#4,445 opened on Sep 2, 2019 0 comments 1 reaction 0 assignees View on GitHub

enhancement feature: files

Description

![2019-09-02-114812](https://user-images.githubusercontent.com/5836855/64106040-a97f3800-cd77-11e9-97de-4716ce26987f.png)

- [ ] Use new activity system with sticky header
- [ ] use MVP system to use ActivityRepository

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