Settings: Improve configuration options displaying

Patch Set 1:    * Replace the backslash sign with the vertical line
                  sign for a better displaying of the configuration
                  options for network mode, screen timeout and sound
                  modes.

                  Before: http://goo.gl/3adfn
                  After:  http://goo.gl/Uvjy2

Change-Id: I0ce415e4163f2f7d0891397a922bc8621634fac9