Tweaks for Google Music

Description

[Ad-Free], I don't like ads so I won't bundle them in to extensions.

Tweaks the UI of google music to change parts I found slightly annoying.
There is options to turn features on and off.
These will sync through all your instances of chrome if you have sync turned on within chrome itself.

So far the options are:

1) Show/Hide Queue Details (the big banner at the top of the current playing queue). I found this takes up far too much space and adds nothing for me.

2) Show/Hide Upload button. Since you can just drag files directly into the webpage directly, this button taken up valuable space, especially when viewed in tight spaces.

3) Show/Collapse Explicit tag. (The tag that looks like [Explicit] in red. This taken up valuable Track name space. I decided removing it completely might have bad repercussions from Google, so I made it so it can Collapse down to [E] and would display in full on hover.

4) Show/Hide or Minimize artist column within play queue.
To allow more space for Track name. This can be set to be completely invisible or minimized to 10%.

5) Show/Hide or Minimize album column within play queue.
To allow more space for Track name. This can be set to be completely invisible or minimized to 10%.

6) Allow/Prevent accidental close. This is the one that started this entire extension off. When you try to close or refresh the tab/browser, you will sometimes curse yourself as it also closed the music player too. This will now ask for confirmation that you wish to close.

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If you wish to have any other tweaks added. Let me know and I will see if I can accommodate.