Fixed BC issue with tooltip/popover being added in wrong place

The new Bootstrap places the tooltip element just after the element the tooltip is on (container)
This however causes styling and positioning issues.
The old behaviour (and what a lot of Joomla elements rely on) is that the tooltip element is placed at the end of the body.

This PR changes the default behaviour to that.

### Testing instructions
One of the issue this solves id the extra pixel of space it causes on for instance the button groups in the article list view:
/administrator/index.php?option=com_content
Hover over the status buttons in the list (publish/feature icons) and see the left button jump a pixel. After this patch that should no longer happen.

This PR also fixes width issue on popovers (mostly used in 3rd party stuff)