LIBDRUM-103. update source code

* clone new git repository from subversion
* new maven version scheme: major.minor.bugfix/local

https://issues.umd.edu/browse/LIBDRUM-103
LIBDRUM-74. Remove PRESERVATION bundle from Bibliography and make it publicly available

https://issues.umd.edu/browse/LIBDRUM-74
LIBDRUM-93. Updates needed to DRUM pages

https://issues.umd.edu/browse/LIBDRUM-93
LIBDRUM-93. Updates needed to DRUM pages

https://issues.umd.edu/browse/LIBDRUM-93
LIBDRUM-99. Change ETD embargo message

commit 0bb36b24da2b20d48aa2c7921e5c8252f0125f33 was a mistake,
should have been included with this commit

https://issues.umd.edu/browse/LIBDRUM-99
LIBDRUM-98. Addition to Advanced Search Dropdown

https://issues.umd.edu/browse/LIBDRUM-98
update .gitignore
LIBDRUM-100. Resolve problems with Keywords for ETDs

https://issues.umd.edu/browse/LIBDRUM-100
Create public wrapped version of private Item methods

* match
* getMetadata
* setMetadata
use .gitignore files to add required empty folders
LIBDRUM-100. improve Java performance for groovy/fix_etd_subjects.groovy

https://issues.umd.edu/browse/LIBDRUM-100
LIBDRUM-93. Updates needed to DRUM pages

Correction based on email from Terry Owen

https://issues.umd.edu/browse/LIBDRUM-93
bump pom version to 1.7.2.1
Merge branch 'release/1.7.2/1'