stream unpause should happen with tag selection

[hburgund]

Since the stream can be started by tapping one of the tags on the Listen view, this action needs to also unpause the stream if it is currently paused. Right now, I believe the only way to unpause is using the play/pause button.

[hburgund]

Further testing reveals that this is not consistent. Sometimes tapping a tag does actually un-pause the stream properly and other times it does not. Also, sometimes tapping the Play button pauses the stream instead of un-pausing, requiring another pair of taps to properly un-pause. It seems that sometimes the button graphic is out of sync with the underlying behavior.

[seeReadCode]

Some notes that I hope will help us iron this all out...

Here's the function that runs when you tap play pause:
https://github.com/seeRead/roundware-ios-digita11y/blob/master/Digita11y/RoomsViewController.swift#L41

This pauseLock (which gets set true here https://github.com/seeRead/roundware-ios-digita11y/blob/master/Digita11y/RoomsViewController.swift#L49 ) might need to get set to false in this block:
https://github.com/seeRead/roundware-ios-digita11y/blob/master/Digita11y/RoomsViewController.swift#L384-L385

It might make sense to move some of that pausing logic into a rwPostStreamsIdPauseSuccess block (in case the pause comes from an audio interruption at the framework level) rather than a user interaction. Likewise with moving some of the resume logic into rwPostStreamsIdResumeSuccess.

Here's the function that runs when you tap an object:
https://github.com/seeRead/roundware-ios-digita11y/blob/master/Digita11y/RoomsViewController.swift#L154