Run clang-format on the entire repo

This patch clang-formats the entire repo. Third-party code is
excluded.

I needed to fix up the .clang-format file so that all the header
includes are ordered properly. I could have sworn that it used to work
without the extra modification, but I guess not.

Signed-off-by: Philipp Schrader <philipp.schrader@gmail.com>
Change-Id: I64bb9f2c795401393f9dfe2fefc4f04cb36b52f6
diff --git a/y2018/constants.cc b/y2018/constants.cc
index 5a180ef..189ea5b 100644
--- a/y2018/constants.cc
+++ b/y2018/constants.cc
@@ -9,9 +9,10 @@
 #include "sanitizer/lsan_interface.h"
 #endif
 
+#include "glog/logging.h"
+
 #include "aos/network/team_number.h"
 #include "aos/stl_mutex/stl_mutex.h"
-#include "glog/logging.h"
 #include "y2018/control_loops/drivetrain/drivetrain_dog_motor_plant.h"
 #include "y2018/control_loops/drivetrain/polydrivetrain_dog_motor_plant.h"