New segmented control based view for Latest tab

- introduced dynamic cell height for News events
Finalized changes to "News"

- New look and feel for Twitter feed updates
- Started to sketch out “Media”
- Lost ability to scroll-to-top of the current view using the tab bar
icon - need to see if this can actually work with multi-views
Media View Controller

- created new tableviewcell design for Media content
- integrate with Parse
- still need to add dynamic color to text background views
Container View model and Media updates

- changed containerView management from NSNotifications to simpler
-bringToFront model
- dynamic text panel background colors for Media cells from Parse
- image caching for Media tableview
Added Volunteer tab and completed Media tab

- various fixes for 3.5 inch screens
Submitted 1.3 to App Store
Merge branch 'updates-for-1.3'