Filebrowser Component

[coltonmercurio]

Adding the entire file browser component (logic and UI). This relies on the filesystem to allow the viewing and editing of multiple files and directories.

==Features added/changed==

• A file browser tab where a user can view the file system (/home/user) structure
• Double-click to open a file in the file browser
• The name of the current file being edited is shown
• Download the current file being edited with the correct name
• Cmd/Control + S saves the current file being edited
• Expand or hide the contents of a directory
• Rename or delete a file/directory from the browser
• Create a new file/directory