Notify that blog is being regenerated

src/freedombone-mesh-blog

 DEFAULT_BLOG_TITLE=$"Freedombone Blog"
 
 function regenerate_blog {
+    clear
+    echo ''
+    echo $'Regenerating blog...'
+
     OLD_STAT_FILE=/home/$USER/.old_stat.txt
     if [ -f $OLD_STAT_FILE ]; then
         rm -f $OLD_STAT_FILE