`BitFileUploader` demo has some issues

[mhrastegari]

BitFileUploader demo has some issues like:

• Sometimes it shows 101% and doesn't get complete
• The file type icon and cancel button should have a better spacing
• The Removable demo is not removing file in Bit BlazorUI website
• The file uploader button should have less text like "Select or drop files" for small screens in Bit BlazorUI website