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/motors/peripheral/uart_buffer.h b/motors/peripheral/uart_buffer.h
index c324a2d..9266465 100644
--- a/motors/peripheral/uart_buffer.h
+++ b/motors/peripheral/uart_buffer.h
@@ -10,7 +10,7 @@
 namespace teensy {
 
 // Manages a circular buffer of data to send out.
-template<int kSize>
+template <int kSize>
 class UartBuffer {
  public:
   // Returns the number of characters added.