New feature, Navigation hover show full name

Some datebase/table/column names are just so long that can't be shown completely,
Instead of adjusting the Navigation's width, hovering upon it to show it fully would be better

![original](https://f.cloud.github.com/assets/5505691/2136096/93fe7228-930a-11e3-8bdd-3cf7495ae403.png)
![pmahomme](https://f.cloud.github.com/assets/5505691/2136097/94016564-930a-11e3-86af-bcb81aa87a3c.png)

BTW，some end-sign notes where "end" are uppercase while others are lowercase, i unified them into lowercase

Signed-off-by: Edward Cheng &lt;c4150221@gmail.com>