po::update and change some error msgid and msgstr word

you can see the task detaily:
tower:https://tower.im/projects/17ce1bc3f1f14999931c914377f5af62/todos/a15dcc655e3d44b8aae78569bdba0d25/

Change-Id: I538fbb3220ba2c837ff346ae0fd57b13bed43fc4