Change location of firefox backup script

The folder of the backup and the script had move so reflect this change.
Backup anki collection everyday

Having another backup is good so that changes will be track and restoration of
notes will be much easier. Anki native backup is not reliable as they are
deleted and a binary file so use it.
Add a script that will put config files into place
Make use of ncmpcpp instead of cmus

This player has more features than cmus. It has its own visualizer and
the fact that it uses mpd makes it much better. Though it requires relearning
many keybindings. It can fetch lyrics on its own too.

The player will be in a window composed of three panes. Those panes will
composed of visualizer, lyrics and the current playlist.
Add mpd and ncmpcpp configurations
Use software volume in playing files in mpd
Make tmux_session an sh script and add ncmpcpp

The layout for ncmpcpp is complicated. At the top, there are two panes. At the
left is the visualizer and at the right is the lyrics for the current song.
Because there is no shortcut for lyrics view in the command line, tmux buffer
is needed. The problem is that the execution of commands is so fast that the
layout got wrong. Or, they are executed in the background. To make it more
smooth, convert the file instead to an sh script. Problem is solved.