Card ESR replaced by a signle variable "iesr" in &ions; documentation added


git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@11217 c92efa57-630b-4861-b058-cf58834340f0
Previous incomplete removal of old stuff had broken "make depend"


git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@11218 c92efa57-630b-4861-b058-cf58834340f0