Adding a table panel for facets.

A new panel with the name facets is added to kibana in order to
display the terms of a facet query in a html table.

Clicks on term names will narrow the search further.

It addresses issuses:
* https://github.com/elasticsearch/kibana/issues/217
* https://github.com/elasticsearch/kibana/issues/12

![bildschirmfoto 2013-07-19 um 21 37 54](https://f.cloud.github.com/assets/1420842/828322/10dc9794-f0b2-11e2-831c-ebaba8ac130e.png)

![bildschirmfoto 2013-07-19 um 22 31 06](https://f.cloud.github.com/assets/1420842/828326/32b29102-f0b2-11e2-98c9-a17e17ccf4da.png)