Updated Latvian translation
update Simplified Chinese (zh_CN) translation
update Simplified Chinese (zh_CN) translation
Updated German translation
Bump version to 3.5.4

To go along GNOME Shell 3.5.4
Updated Lithuanian translation
Convenience: relicense to BSD

This module is meant to be a copy-lib, and it is used all over the
place (including GPLv3, LGPL or BSD licensed extensions). I don't
want to block an extension for license incompatibility.

The rest of the repository is still GPLv2, as it is the tarball
distribution and individual extensions downloaded from the website.
Updated Serbian translation
Updated Indonesian translation
alternate-tab: refactor All & Thumbnails

Split the two modes in two different modules, for easier maintenance.
Refactor the AllThumbnails code completely, by copying relevant
or useful code for gnome-shell directly instead of hacking around
it.
alternate-tab: show an application icon overlaid to the thumbnails

In All&Thumbnails mode, show an application icon above the thumbnail,
for easier recognition of the window.
The old behaviour can be restored in the preferences dialog.
Bump version to 3.5.5

To go along GNOME Shell 3.5.5
Updated Spanish translation
alternate-tab: rework again

Kill the mode switch distinction, and kill the old and unmaintained
Workspace&Icons mode.
Introduce instead configurability for the All&Thumbnails code, which
now independently allows choosing if only all windows or only those
from current workspace should be shown, and in which way (thumbnail,
icon, both).
All configuration settings changed, so the extension must be configured
again (although hopefully I chose reasonable defaults)
update Punjabi Translation
Updated Spanish translation
alternate-tab: respect aspect ratio for window thumbnails

It is weird if 16:9 thumbnails get turned into squares. Instead,
center them.

https://bugzilla.gnome.org/show_bug.cgi?id=656217
native-window-placement: update for gnome-shell changes

Workspace.positionWindows semantics changed, so the function
we want to override is now _realPositionWindows.
systemMonitor: update for gnome-shell changes

gnome-shell 3.5.90 has a new, bigger, message-tray. Restyle the
systemMonitor appropriately to blend in.
systemMonitor: add tooltips to the indicators

Currently it's hard to find what the indicator mean, without any
label. Add a tooltip, shamelessly copied from js/ui/dash.js in
core shell.