Peg zeronet blog to a commit

src/freedombone

 ZERONET_REPO='https://github.com/HelloZeroNet/ZeroNet.git'
 ZERONET_COMMIT='675bd462556c541d65e2d95f91f899146a373aad'
 ZERONET_BLOG_REPO='https://github.com/HelloZeroNet/ZeroBlog'
+ZERONET_BLOG_COMMIT='bbb0d6c36465fed2e6df71f1aab45fcc9c6ad609'
 ZERONET_FORUM_REPO='https://github.com/HelloZeroNet/ZeroTalk'
+ZERONET_FORUM_COMMIT='e2d2c9cb1cfbfef91b244935efb5c14c2ad95faa'
 ZERONET_URL=http://127.0.0.1:43110
 ZERONET_PORT=15441
 TRACKER_PORT=6969
       if grep -q "IPFS_COMMIT" $CONFIGURATION_FILE; then
           IPFS_COMMIT=$(grep "IPFS_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
       fi
+      if grep -q "ZERONET_BLOG_COMMIT" $CONFIGURATION_FILE; then
+          ZERONET_BLOG_COMMIT=$(grep "ZERONET_BLOG_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
+      fi
+      if grep -q "ZERONET_FORUM_COMMIT" $CONFIGURATION_FILE; then
+          ZERONET_FORUM_COMMIT=$(grep "ZERONET_FORUM_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
+      fi
       if grep -q "GNUSOCIAL_COMMIT" $CONFIGURATION_FILE; then
           GNUSOCIAL_COMMIT=$(grep "GNUSOCIAL_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
       fi
       return
   fi
 
+  if [ -d /opt/zeronet/ZeroBlog ]; then
+      if grep -q "ZeroNet Blog commit" $COMPLETION_FILE; then
+          CURRENT_ZERONET_BLOG_COMMIT=$(grep "ZeroNet Blog commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
+          if [[ "$CURRENT_ZERONET_BLOG_COMMIT" != "$ZERONET_BLOG_COMMIT" ]]; then
+              cd /opt/zeronet/ZeroBlog
+              git stash
+              git checkout master
+              git pull
+              git checkout $ZERONET_BLOG_COMMIT
+              git checkout -b $ZERONET_BLOG_COMMIT
+              sed -i "s/ZeroNet Blog commit.*/ZeroNet Blog commit:$ZERONET_BLOG_COMMIT/g" $COMPLETION_FILE
+          fi
+      else
+          echo "ZeroNet Blog commit:$ZERONET_BLOG_COMMIT" >> $COMPLETION_FILE
+      fi
+  fi
+
   if grep -Fxq "install_zeronet_blog" $COMPLETION_FILE; then
       return
   fi
       echo 'ZeroBlog repo could not be cloned'
       exit 6739
   fi
+  cd /opt/zeronet/ZeroBlog
+  git checkout $ZERONET_BLOG_COMMIT
+  git checkout -b $ZERONET_BLOG_COMMIT
+  if ! grep -q "ZeroNet Blog commit" $COMPLETION_FILE; then
+      echo "ZeroNet Blog commit:$ZERONET_BLOG_COMMIT" >> $COMPLETION_FILE
+  else
+      sed -i "s/ZeroNet Blog commit.*/ZeroNet Blog commit:$ZERONET_BLOG_COMMIT/g" $COMPLETION_FILE
+  fi
+
   echo $"ZeroNet Blog address:     $ZERONET_BLOG_ADDRESS"
   echo $"ZeroNet Blog private key: $ZERONET_BLOG_PRIVATE_KEY"
   cp -r /opt/zeronet/ZeroBlog/* /opt/zeronet/data/$ZERONET_BLOG_ADDRESS
               cp $INSTALL_DIR/cleanup-maildir/cleanup-maildir /usr/bin
           fi
       else
-          echo "cleanup-maildir commit:$GNUSOCIAL_COMMIT" >> $COMPLETION_FILE
+          echo "cleanup-maildir commit:$CLEANUP_MAILDIR_COMMIT" >> $COMPLETION_FILE
       fi
   fi
 
   # update to the next commit
   if [ -d $INSTALL_DIR/nginx_ensite ]; then
       if grep -q "Nginx-ensite commit" $COMPLETION_FILE; then
-          CURRENT_GNUSOCIAL_COMMIT=$(grep "Nginx-ensite commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
+          CURRENT_NGINX_ENSITE_COMMIT=$(grep "Nginx-ensite commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
           if [[ "$CURRENT_NGINX_ENSITE_COMMIT" != "$NGINX_ENSITE_COMMIT" ]]; then
               cd /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
               git stash