Fixed header text positioning issue
Removed table-based DOM structure for Species tree and added CSS to format appropriately. Fixes #24.
Added code to update zip code field. Fixes #27.
Cleaned up excessive logging in student code from last semester.
Fixed some minor CSS things.
Cleaned up code related to hierarchical search.
Fixed date format issue that caused issues with NaN. Fixes #25.
Cleaned up UI team code from last semester.