Add activity details page

[khalifan-kfan]

Description

In the grid view of manual items when one clicks an activity, they should be routed to the activity details page @chrismclarke This is to cover for the forgotten commit, so sorry about that, It is also merged with your code tiding

Discussion

Following the discussion from #138

Preview

https://picsa.app

Screenshots / Videos

[khalifan-kfan]

Sure, I'll try out the library on the next task and give you feedback as well, thanks for compressing the video

[khalifan-kfan]

If the video sizes later become very huge, we could parse them through links and host them online