Updated Latvian translation
Updated Serbian translation
Updated German translation
Updated Brazilian Portuguese translation

Fixes BGO#712175
Update Chinese simplified translation
Updated FSF's address
constraints: don't apply fullscreen workarounds for CSD windows

If you maximize a CSD window on a monitor without struts, it ends
up taking the whole monitor size, but it doesn't mean that the
application wants to fullscreen.

https://bugzilla.gnome.org/show_bug.cgi?id=708718
doap: update URLs
Finnish translation update
misc: rename configure.in to configure.ac
ui.[c/h]: remove unused function
themewidget: remove, it is unused
compositor-xrender.c: remove unused variables
boxes.c: remove unused variable
testasyncgetprop.c: remove unused variable
window.c: remove unused variables
ui.[c/h]: remove MetaImageWindow, it is unused
misc: remove deprecated g_[type/thread]_init
configure.ac: bump glib and gthread required versions
Build with gtk+-3.0
Most changes are copied from mutter 3.4.0. So thanks to mutter
developers! They done all hard work.
This patch also removes unused functions.