title: Bulk renaming/updating storage blob files
body: <p>One of our depts named their files "XXX.pdf" while the documents were already  pdfs (1000+). It is causing errors on one of our resource libraries because the files have .pdf.pdf. I am look to see if there is an easy way to bulk rename/update the files to remove .pdf from all of the file names. Any help is appreciated.</p>