Updated data to zipdata.csv.
deleted older data file.
modified tests.
modified create and destroy methods for session.
Removed duplicate display of flash messages.
commented out sections of footer (button display).
Modified button display branching on current user.
Added class for heading.
Added class for heading.
Added class for heading.
Changed table alignment.
Added class for heading.
Changed path for Sign Out button.
Changed table row titles.
Updated gem locks.
Added tests.