* Improve the JS/LESS so that its content makes the tip grow
with a bubble effect (instead of using a popover).
* Avoid flickering when the mouse leave/enter the tip or move
between the tip and its anchor element.
* Use text-align:left instead of justify
* Set the content width in JS (to a larger width) to be customizable
* Round LESS variable to avoid values like 266.6666666666
* Set opening direction according to viewport:
- Top and bottom tips open towards the right except if they overflow
the window on this right
- Left and right tips open towards the bottom except if they overflow
the window on this bottom
* Improve the 'Skip these steps' mechanism (which is easier as we don't
use bootstrap's popover anymore)
qsm-odoo