drop-down menu done.
todo:
1. make index page only show patients whose is_deleted = false
2. add delet route, controller method, modify index page
 DNOE: 1. make index page only show patients whose is_deleted
       2. create scope onTreatment notDeleted
 TO:   I18n
DONE: the viewed_count can be increased when patined record be showed
DONE: add a location screen, but import a bug
test
DONE: the bug is cause by routes rules, fix it with a dirty method.
TO: Test
DONE: fix a little bug in location page
DONE: partly i18n
ALL DONE.
delete private information
add a readme