How to disable the CapLock?

The graphical options for keyboard layout seem to have changed. You can do it via terminal though. Open a terminal using Ctrl+Alt+t and then do then:

setxkbmap -option caps:none

To re-enable them:

setxkbmap -option

To make this happen at every reboot, write the command to a file and store it in a convinient location(the filesystem should be ext4 where you would store the file) and then on a terminal, type crontab -e and then add this line to the end of the file that opens up(it may ask you to set the editor by which it should open, I prefer nano or vim.full:

@reboot /path/to/the/script

I created an Autostart with the command

setxkbmap -option caps:none

Startup Applications > Add > Name: Disable Capslock > Command: setxkbmap -option caps:none > Add.

Restart and capslock is disabled. Works also in Ubuntu 14.04