Fix Suggestion card UI tweak.

1) Change suggestion card icon with a higher def.
2) Define line space between explanation message.

BUG 25387283

Change-Id: I623a97b69c951282c0b1eb2901f16b1c55b1f622
diff --git a/res/layout/quickcontact_collapsed_suggestion_card.xml b/res/layout/quickcontact_collapsed_suggestion_card.xml
index 494447f..bf8c97d 100644
--- a/res/layout/quickcontact_collapsed_suggestion_card.xml
+++ b/res/layout/quickcontact_collapsed_suggestion_card.xml
@@ -29,7 +29,7 @@
         android:id="@+id/collapsed_suggestion_header">
 
         <ImageView
-                android:src="@drawable/quantum_ic_assistant_grey600_24"
+                android:src="@drawable/quantum_ic_assistant_grey600_48"
                 android:layout_width="@dimen/quickcontact_collapse_icon_size"
                 android:layout_height="@dimen/quickcontact_collapse_icon_size"
                 android:layout_margin="@dimen/quickcontact_collapse_image_padding"
@@ -38,7 +38,7 @@
         <TextView
                 android:id="@+id/collapsed_suggestion_card_title"
                 android:textSize="@dimen/expanding_entry_card_title_text_size"
-                android:layout_marginLeft="16dp"
+                android:layout_marginLeft="8dp"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_weight="1"