[HatoholError] Unify similar error codes

HTERR_NOT_FOUND_*_ID ->
HTERR_NOT_FOUND_TARGET_RECORD

except HTERR_NOT_FOUND_SESSION_ID
[FaceRest] Log a client's IP address on failing authentication
[FaceRest] Ensure to use replyError() to log errors
Merge branch 'issue100'