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/control_loop.cc b/frc971/control_loops/control_loop.cc
index 99c005a..3b475a9 100644
--- a/frc971/control_loops/control_loop.cc
+++ b/frc971/control_loops/control_loop.cc
@@ -1,7 +1,5 @@
 #include "frc971/control_loops/control_loop.h"
 
 namespace frc971 {
-namespace controls {
-
-}  // namespace controls
+namespace controls {}  // namespace controls
 }  // namespace frc971