MLECO-2458 and MLECO-2476 [Fix] VWW IFM quant step

* Changed image->cc conversion to be similar with preprocessing
  of img_class and vww models: images are scaled maintaing the
  aspect ration and then the centre crop of the correct size
  is taken.
* VWW applies input quantization info to the int8 image
  (prior converted to [0,1] float range).
* Changed adult_blur to a image without person.
* Fix menu print when selecting a specific ifm to run
  (Select message was displayed after typing something)

Change-Id: Ie6cde7ab4835ea842667b87397458a5d32131df3
diff --git a/source/use_case/kws_asr/src/MainLoop.cc b/source/use_case/kws_asr/src/MainLoop.cc
index ed9034f..d5a2c2b 100644
--- a/source/use_case/kws_asr/src/MainLoop.cc
+++ b/source/use_case/kws_asr/src/MainLoop.cc
@@ -161,6 +161,7 @@
             case MENU_OPT_RUN_INF_CHOSEN: {
                 printf("    Enter the audio clip index [0, %d]: ",
                        NUMBER_OF_FILES-1);
+                fflush(stdout);
                 auto clipIndex = static_cast<uint32_t>(
                         arm::app::ReadUserInputAsInt(platform));
                 executionSuccessful = ClassifyAudioHandler(caseContext,