Updates backup script, adds database backup script and modifies extract script

bin/backupDatabases

@@ -0,0 +1,15 @@
+#! /bin/bash
+TIMESTAMP=$(date +"%F")
+BACKUP_DIR="$HOME/Sites/db-backups"
+MYSQL_USER="root"
+MYSQL_PASSWORD="root"
+MYSQL=/opt/lampp/bin/mysql
+MYSQLDUMP=/opt/lampp/bin/mysqldump
+
+mkdir -p "$BACKUP_DIR"
+
+databases=`$MYSQL --user=$MYSQL_USER -p$MYSQL_PASSWORD -e "SHOW DATABASES;" | grep -Ev "(Database|information_schema|performance_schema)"`
+
+for db in $databases; do
+  $MYSQLDUMP --force --opt --user=$MYSQL_USER -p$MYSQL_PASSWORD --databases $db | gzip > "$BACKUP_DIR/$db-$TIMESTAMP.sql.gz"
+done