Woo Document Preview Pro v1.3.5

= 1.3.5 =
* Fix: (#74) Issue on removing category
* Fix: Update option for existing user
* Fix: (#72) Issue with WCFM
* Fix: (#71) Dynamic message from the backend
* Fix: (#67) File type issue with dokan
* Fix: (#68) Issue in file type option with WCFM
* Fix: (#65,66) The issue with Dokan and WCFM
* Fix: (#64) Warning issue
* Added: (#70) Default category Uncategorized should be shown in the dropdown.
* Added: (#61) Upload a document for a particular category
* Added: (#60) Allowed file type option