rebrand 'Live' to 'Recently Streamed'

[abcmer]

Hi there, first time contributor here. Just want to say how much I appreciate the work done on this project so far. Relisten is a fantastic app that I use often.

This pull request is in response to Issue #23. My changes effectively rebrand of the 'Live' page to be called 'Recently Streamed' across the project. I thought 'recently streamed' was perhaps more clear than 'recently played', which could be confused with 'recently performed'. Let me know your thoughts on this and any other feedback you have.

Cheers, Adam