Change user agent as filmon was blocking old one

[mcaptur]

No description provided.

[Mike-KL]

@mcaptur thanks
Please can this be tested and merged as pvr.filmon broken otherwise.
Can then close raised issue #55

[ksooo]

@mcaptur please bump the add-on version and update the changelog. Thanks.

[mcaptur]

Done

[ksooo]

And now please squash down the commits to a single commit and we're ready to go. ;-)

[Aristogiton]

Let me say that the use of a single #define (for User-Agent in FilmonAPI.cpp) would improve the maintainability of the software

[mcaptur]

done

[ksooo]

@mcaptur thanks