Fix and Update

[muhammad-bassiouni]

Some changes made to make it more efficient:

• Fixing the second preview of files to be in bootstrap table form
• Fixing video and audio browsing by making it possible to go to any time in the video or audio progress bar
• Adding download button for each file and folder
• Adding tip to info the user if the file can be browsed on the current browser or not
• Adding icons to differentiate different file types
• and More...