The `asset()` helper was missing at some places so it was not possible
to install it in an other place than the server's root (/).
The paths have been fixed and now use the `asset()` helper. Also,
The steps process takes care of the current path.
See: #3618
When we mouseovered on a point on a metric, the value was shown but the
suffix wasn't.
It was due to a curly bracket issue, the "tooltip" option wasn't given
as an "option" sub-object, but as a third argument of the Chart
constructor. A curly bracket was closed to early.
This is fixed and the suffix is now displayed.
Related to CachetHQ/Cachet#2848
Anthony Bocci