Modify Scripts to be fileman 22.2 ready

VistAMenuUtil: Change to use case insensitive match for fileman
related menu texts.

VistARoutineImport: Change to use absolute path for routine import file
as well as routine output dir.

VistAPackageInfoFetcher: Modulize datetime parsing logic to be both forward
compatible with fileman 22.2 and backward compatible with fileman 22.
Also change fileman related menu text to be case insensitive match.

OSEHRA-Id: http://issues.osehra.org/browse/OAT-99
Change-Id: Ie20397e22813dee14348c025495d6409456f6c6c
Merge "Modify Scripts to be fileman 22.2 ready"