Add ability to provide custom paths RegExps

[melkorm]

This fixes #3

Added little textarea popup to fill with user specific metric RegEx paths separated by newline. Data is persisted in plugin storage. Empty list defaults to current list

I have also looked into #1 and there is a way to access response headers https://developer.chrome.com/extensions/webRequest#event-onHeadersReceived but when I almost made it work I came to to few conclusions why maybe it's not best idea:

• plugin gets more complicated,
• any other app which uses version in Content-Type will be affected,
• we require permission to view user's traffic and I think it's too much for such little plugin,
• proposed solution covers 99% cases.

@fhemberger It would be great if you could look at this 👍

[fhemberger]

Sorry, GitHub notifications seem to have some issues, I just got the mail. First of all, thank you! This is really cool, I'll have a deeper look over the weekend to get it merged.

[fhemberger]

Published as v1.2.0, thank you!

[RichiH]

Thanks!