Enter, View Observations and create drop tables
Merged changes with Shivani
Merge branch 'master' of https://github.com/mpallavi89/csc540p1

Conflicts:
	lib/DBAPI.java
	ui/ODLCLI.java
Added back id param (lost in merge)
Changed some wording or menu options in several places.  Fixed tabbing/alignment for easier reading of source.