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/frc971/control_loops/coerce_goal.h b/frc971/control_loops/coerce_goal.h
index 1847682..6867540 100644
--- a/frc971/control_loops/coerce_goal.h
+++ b/frc971/control_loops/coerce_goal.h
@@ -2,6 +2,7 @@
 #define FRC971_CONTROL_LOOPS_COERCE_GOAL_H_
 
 #include "Eigen/Dense"
+
 #include "frc971/control_loops/polytope.h"
 
 namespace frc971 {