InputCommon: add a ton of missing consts

fix some related grammar errors
only the ButtonManager required code changes

Source/Core/InputCommon/ControllerEmu/ControlGroup/AnalogStick.cpp

@@ -32,7 +32,7 @@ AnalogStick::AnalogStick(const char* const name_, const char* const ui_name_,
   AddInput(Translate, _trans("Modifier"));
 }
 
-AnalogStick::ReshapeData AnalogStick::GetReshapableState(bool adjusted)
+AnalogStick::ReshapeData AnalogStick::GetReshapableState(bool adjusted) const
 {
   const ControlState y = controls[0]->GetState() - controls[1]->GetState();
   const ControlState x = controls[3]->GetState() - controls[2]->GetState();
@@ -46,7 +46,7 @@ AnalogStick::ReshapeData AnalogStick::GetReshapableState(bool adjusted)
   return Reshape(x, y, modifier);
 }
 
-AnalogStick::StateData AnalogStick::GetState()
+AnalogStick::StateData AnalogStick::GetState() const
 {
   return GetReshapableState(true);
 }