Update a few more strings

1) Fingerprint intro page footer buttons
2) Screen lock removal positive button
3) Update UDFPS string logic
4) Update UDFPS strings during enrollment
5) Update generic fingerprint enroll completion message

Bug: 187868985
Test: manually, in settings and SUW
Change-Id: Iddcc0a65c3f410b4ae33a760dfcc57aba4bcc7f9
2 files changed