It was previously possible to add a workspace above the maximum workspaces
limit by dragging an item to the "add workspace" button or using the middle
mouse button click.
Provide the user with feedback in the info bar when it is not possible to create
a new workspace or remove the current workspace.
https://bugzilla.gnome.org/show_bug.cgi?id=591645
POTFILES.in was missing some files.
"Activities" is not easily translatable into some languages, e.g. Russian,
so suggest using the word for "Overview" instead.
Infrastructure for localization; hook up intltool, create po/
and po/POTFILES.in. We need to call bindtextdomain/bind_textdomain_codeset.
Switch to gnome-autogen.sh to call intltool.
