Merge pull request #39 from YfLn/master

Updating Richard branch from Master
Merge pull request #40 from YfLn/Elli

Elli
-Added addDatabase/removeDatabase portfolio buttons to database list view.
Merge pull request #41 from YfLn/master

Updating Richard branch from master
Merge pull request #42 from YfLn/Richard

Add to portfolio/remove from portfolio added to list database
Merge pull request #43 from YfLn/master

Updating Elli branch from master