Have LayoutManager automatically deal with sizing and positioning
boxes for the panel and messageTray relative to the monitors.
Also, now that LayoutManager knows exactly where and how tall the
panel and tray are, have it manage the pointer barriers as well.
https://bugzilla.gnome.org/show_bug.cgi?id=612662
Instead, create three ripples and keep tweening them. This gives a dramatic
speedup when entering the overview, but means that we can't have the same animation
running twice. In this case, we "reset" the currently running ripple animation, but
it is hard to notice unless looking for it.
https://bugzilla.gnome.org/show_bug.cgi?id=656125
LayoutManager and Chrome are already somewhat intertwined and will be
becoming more so. As a first step in merging them, move the Chrome
object into layout.js (with no other code changes).
https://bugzilla.gnome.org/show_bug.cgi?id=655813
Move the HotCorner class from panel to layout, and make the panel
manage its own HotCorner.
Stick the panel's HotCorner into the Activities button actor (rather
than separately floating above it), so that hover tracking on the
button works properly without needing hacks in HotCorner.
https://bugzilla.gnome.org/show_bug.cgi?id=645759
Remove ShellGlobal's monitor-related methods, and have
Main.layoutManager provide that information instead. Move
Main._relayout() to LayoutManager, and have other objects connect to
the layout manager's 'monitors-changed' signal to know when the screen
geometry has changed.
https://bugzilla.gnome.org/show_bug.cgi?id=636963
