fixes install.sh to not rm the target installation dir; now it is possible to run install.sh from other directories; adds an option to delete the non java build directory
fixes install.sh to not rm the target installation dir; now it is possible to run install.sh from other directories; adds an option to delete the non java build directory

itesla/ipst,itesla/ipst,itesla/ipst,itesla/ipst,powsybl/powsybl-core,itesla/ipst-core,itesla/ipst-core,powsybl/powsybl-core,itesla/ipst-entsoe,itesla/ipst,itesla/ipst,itesla/ipst,itesla/ipst-entsoe,itesla/ipst,powsybl/powsybl-core,itesla/ipst-core,itesla/ipst-core