Copy NetworkSelectSettings to settings app

This is a clean copy except:
1. Fix issues in strings.xml to make it pass pre-upload check
   a) add "CHAR_LIMIT"
   b) Update special character

Future CL will remove compile error and make it compatible with
settings.

Bug: 114749736
Test: Build
Change-Id: I8fe28ff1358f94334ff9663a4404628ae0eff9af