Update es_ES.js
Update es_ES.js

some new strings that needed translation
kuoruan/webui-aria2,ziahamza/webui-aria2,ghostry/webui-aria2,slime7/webui-aria2,kuoruan/webui-aria2,ziahamza/webui-aria2,slime7/webui-aria2,ghostry/webui-aria2