Adding populate_library_tables
Added populate_library_tables and modified dropLibTables.sql
updated populate_library_tables
Merge branch 'master' into branch_lin
Merge pull request #21 from g2-aj/branch_alshahna

Branch alshahna
Merge pull request #22 from g2-aj/branch_alshahna

fixed populating test tables for lib branch
Merge pull request #23 from g2-aj/branch_alshahna

working on checking the borrower account info
Merge branch 'master' of https://github.com/g2-aj/cs304 into branch_kris

Conflicts:
	populate_library_tables.sql
fixed conflicts in populate_library_tables.sql
Merge pull request #24 from g2-aj/branch_kris

Fixed date on insertBook() and showBook().
Finished Librarian transaction
Merge pull request #25 from g2-aj/branch_lin

Branch lin
added and tested working showBookCopy() function
Merge branch 'master' of https://github.com/g2-aj/cs304 into branch_kris
changed the sql script a bit
Merge pull request #26 from g2-aj/branch_kris

I added create HasSubject table in populate_library_tables
Placed HoldRequest for Borrower
Merge pull request #27 from g2-aj/g3-ks

Placed HoldRequest for Borrower
Deleted system class
Merge pull request #29 from g2-aj/g3-ks

Deleted system class