Finish moving //y2014/... into its own namespace

Stuff didn't compile in the half-switched state it was in before.

Change-Id: I00ec3c79a2682982b12d4e8c8e682cb8625eb06d
diff --git a/y2014/control_loops/drivetrain/ssdrivetrain.cc b/y2014/control_loops/drivetrain/ssdrivetrain.cc
index 3c2a962..9576bcd 100644
--- a/y2014/control_loops/drivetrain/ssdrivetrain.cc
+++ b/y2014/control_loops/drivetrain/ssdrivetrain.cc
@@ -172,7 +172,7 @@
 }
 
 void DrivetrainMotorsSS::SendMotors(
-    ::frc971::control_loops::DrivetrainQueue::Output *output) const {
+    ::y2014::control_loops::DrivetrainQueue::Output *output) const {
   if (output) {
     output->left_voltage = loop_->U(0, 0);
     output->right_voltage = loop_->U(1, 0);