Added editing mode animation
Removed extra whitespace
Fixed crash on fast switch between tabs

If you switched from the portfolio summary tab before the data is done
loading to the stock status tab, deleted a stock, and then went back to
the portfolio summary tab, the app would crash. This change fixes that
crash.
Fix for the stock status tab
Tab bar is no longer translucent
Merge pull request #6 from benhroos/crash-fix

Crash fixes for the pull-to-refresh and fast switching between tabs
Merge branch 'master' into Project-2