Added DB Base Object class.

The DB base class requires that all DB objects that inherit from it must
implement a parse method that will generate an SQL accepted string.

I've updated the Fruit and User classes to reflect these changes /
requirements; however, the Parse methods for both classes still need to
be tested to see if they're valid SQL statements.
Renamed DB class to DRCDB to match naming convention.

Also added an empty Unit Test project for DB.
Merge branch 'master' of https://github.com/lansdon/cpts483_drc

Resolved some conflicts between the master and the DB_Branch code.