changed highlight color
Completed revision 0.18.13, updates include:
1) Restyled the input/navigation bar
2) Added message sampling capability
3) Rewrote web socket layer
added message streaming indicator and the current partition and offset being viewed
Merge branch 'feature/webui' into scala_2.11

* feature/webui:
  added message streaming indicator and the current partition and offset being viewed
  Completed revision 0.18.13, updates include: 1) Restyled the input/navigation bar 2) Added message sampling capability 3) Rewrote web socket layer
  changed highlight color