Ambiance: GtkTreeView enhancements to be less widget specific
Ambiance: GtkTreeView enhancements to be less widget specific

Rules should aimed to be applied to classes rather than specific
widgets. For example a good way to start doing this is in the
Treeview rules that define zebra stripping: by making them
target the .view class, we make zebra stripping compatible
with other Treeview-like widgets, like Banshee's ListView.

This also goes more in sync with GTK upstream, i.e. you can
take its default theme as an example:
https://github.com/GNOME/gtk/blob/3.10.7/gtk/gtk-default.css#L72

IonicaBizau/Flattiance