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/gaussian_noise.cc b/frc971/control_loops/gaussian_noise.cc
index c1c8701..ddfa0f3 100644
--- a/frc971/control_loops/gaussian_noise.cc
+++ b/frc971/control_loops/gaussian_noise.cc
@@ -4,9 +4,7 @@
 namespace control_loops {
 
 GaussianNoise::GaussianNoise(unsigned int seed, double stddev)
-    : stddev_(stddev),
-      generator_(seed),
-      distribution_(0.0, 1.0) {
+    : stddev_(stddev), generator_(seed), distribution_(0.0, 1.0) {
   // Everything is initialized now.
 }