Add ~/.mpv, configuration files for mpv

Maybe mpv will replace mplayer eventually
Switch keybell off
ncmpcpp 0.6.0 removed the "toggle" option. Use mpc instead.
Add "Jump to last known cursor position"
Update NERDTree
Update supertab
Update clang_complete
Hack avoid loading of the systemwide vimrc
Bigger monitors :)
Customized menu