[MERGE]: Merged from master

...ts/demo-components/dropzone-demo/AdvancedDropzoneDemo.jsx

...components/demo-components/main-page/DropzoneMainPage.jsx

...-ui/components/dropzone/components/dropzone/Dropzone.scss

...s-ui/components/dropzone/components/dropzone/Dropzone.tsx

...files-ui/components/file-input-button/FileInputButton.tsx

...e-mosaic/components/FileMosaicStatus/FileMosaicStatus.tsx

...mponents/FileMosaicUploadLayer/FileMosaicUploadLayer.scss

...omponents/FileMosaicUploadLayer/FileMosaicUploadLayer.tsx

...onents/file-mosaic/components/file-mosaic/FileMosaic.scss

...ponents/file-mosaic/components/file-mosaic/FileMosaic.tsx

src/files-ui/components/material-button/MaterialButton.scss

src/files-ui/core/index.ts

src/files-ui/core/types/ExtFileManager.ts

src/files-ui/core/upload/index.ts

src/files-ui/core/upload/response.upload.ts

src/files-ui/core/upload/upload.ts

src/files-ui/core/utils/fileListParser.ts

src/files-ui/core/utils/index.ts

src/files-ui/core/utils/isUploadAbleExtFile.ts

src/files-ui/hooks/useDropzoneFileUpdater.ts