Changed DisplayValueRender and ReadibleValueRender to display Checked / Unchecked instead of Yes / No or 1 / 0.
Changed DisplayValueRender and ReadibleValueRender to display Checked / Unchecked instead of Yes / No or 1 / 0.

djoudi/otrs-gitimport-test,djoudi/otrs-gitimport-test,djoudi/otrs-gitimport-test