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/tests/utils/ImageUtils.cc b/tests/utils/ImageUtils.cc
index f77ce1e..506040f 100644
--- a/tests/utils/ImageUtils.cc
+++ b/tests/utils/ImageUtils.cc
@@ -18,12 +18,12 @@
 
 void convertImgIoInt8(void * data, const size_t sz)
 {
-    uint8_t * tmp_req_data          = (uint8_t *)data;
-    int8_t * tmp_signed_req_data    = (int8_t *) data;
+    uint8_t * tmp_req_data          = static_cast<uint8_t *>(data);
+    int8_t * tmp_signed_req_data    = static_cast<int8_t *>(data);
 
     for (size_t i = 0; i < sz; ++i) {
-        tmp_signed_req_data[i] = (int8_t)(
-                (int32_t)(tmp_req_data[i]) - 128);
+        tmp_signed_req_data[i] = static_cast<int8_t>(
+                static_cast<int32_t>(tmp_req_data[i]) - 128);
     }
 }