table css update

- fix css for table better than #259
- use ToolbarHelper in sqllog panel
- cleanup related to ToolbarHelper

I figure out that the patch in #259 solved the horizontal scrolling but also, it fixes all table cell width to be automatically identical which is not ideal and even not pleasant to usse for SQL log. I was going to revert it but after more investigation I found that the `word-wrap` was enough for FF and IE.
It was still not working on webkit but the word-break solve correctly the issue ([doc here](https://developer.apple.com/library/safari/documentation/AppleApplications/Reference/SafariCSSRef/Articles/StandardCSSProperties.html#//apple_ref/doc/uid/(null)-SW1)).

Now, table cells will take the maximum space available without extending the table over 100% of the page width.
Sorry for not finding out the best solution or digging enough on the first time, I'm definitly moving back to FF