Rename PotAndAbsEncoder to be more consistent

$ git sed 's/AbsoluteEstimatorState/PotAndAbsoluteEncoderEstimatorState/'
$ git sed 's/PotAndAbsEncoderZeroingEstimator/PotAndAbsoluteEncoderZeroingEstimator/'

It's a bit all over the place in terms of naming and doesn't leave much
space to name something which is just an absolute encoder.

Change-Id: Iecbee91191bd9cc16eb08fd24b91335ef772beec
diff --git a/y2018/control_loops/superstructure/intake/intake.h b/y2018/control_loops/superstructure/intake/intake.h
index dff0adc..552086a 100644
--- a/y2018/control_loops/superstructure/intake/intake.h
+++ b/y2018/control_loops/superstructure/intake/intake.h
@@ -104,7 +104,7 @@
 
   State state_ = State::UNINITIALIZED;
 
-  ::frc971::zeroing::PotAndAbsEncoderZeroingEstimator zeroing_estimator_;
+  ::frc971::zeroing::PotAndAbsoluteEncoderZeroingEstimator zeroing_estimator_;
 
   double intake_last_position_ = 0.0;
 };