GPII-125: updated the url to the fireworks text to speech server
GPII-125: fixed tts selector in the panel, added proper ended event listener instead of the timeout.
Merge remote-tracking branch 'yura/GPII-125'

* yura/GPII-125:
  GPII-125: fixed tts selector in the panel, added proper ended event listener instead of the timeout.
  GPII-125: updated the url to the fireworks text to speech server