Use inverted Popups as Tooltips and normal Popups as Popovers

Screenshots:
##### Inverted popup : 
![tooltip](https://cloud.githubusercontent.com/assets/6888059/5274161/051ef200-7a89-11e4-954c-99230aea74a1.gif)

##### Normal popup
![popover](https://cloud.githubusercontent.com/assets/6888059/5274166/1201cf9c-7a89-11e4-96f0-7eb8ec75598c.gif)