Unify Single Upload type checks on server/client side

[ioleo]

Some files (eg. .xlsx) are displayed as one type (eg. spreadsheet) when selecting the file for upload (client side file type check), and then are displayed as another type (eg. archive) after upload (server side file type check).

These must be unified.

[denys281]

@loostro today I have same problem. After .xls saving file change ext to .doc. And I have problem with .rar archive. After saving it also become .doc file. With .zip file all ok.