renamed template API run_all_text() to python_source_for_model(), moved SRW specific code into template.srw
renamed template API run_all_text() to python_source_for_model(), moved SRW specific code into template.srw

mkeilman/sirepo,mrakitin/sirepo,radiasoft/sirepo,mrakitin/sirepo,mkeilman/sirepo,mrakitin/sirepo,radiasoft/sirepo,radiasoft/sirepo,mkeilman/sirepo,mrakitin/sirepo,mkeilman/sirepo,radiasoft/sirepo,radiasoft/sirepo