better description about what the override field actually does.
- fixed description
- extra fix:
- using variable instead of hard coded text
- removed unnecessary code
- removed "Allow override" checkbox from show live stream section.
- removed "auto enable live stream" checkbox from stream setting page.
- implemented authentication functionality of live dj source connection.
- A section where user can setup port and mount point for harbor input in
stream setting page(front-end and back-end)
- updated the part where it rewrites the liquidsoap.cfg file
