use smaller Social logo on tablets

Author: tibbi

app/src/main/res/values-sw600dp/dimens.xml

@@ -3,7 +3,7 @@
     <dimen name="icon_size">84dp</dimen>
     <dimen name="settings_padding">12dp</dimen>
     <dimen name="social_padding">12dp</dimen>
-    <dimen name="social_logo">60dp</dimen>
+    <dimen name="social_logo">50dp</dimen>
     <dimen name="preview_btn_margin">64dp</dimen>
 
     <dimen name="normal_text_size">18dp</dimen>