Merge pull request #5 from kylestlb/master

Pushing my code I should have pushed forever ago (no new updates since
last meeting)

took TVNavigationController code online and used it to swap the detail
views when clicking on a button in the master view's sidebar

which I shouldn't have taken out in the first place >.>
gives room for expansion (to shows the calendar & upcoming events I
presume)

we no longer have a homeDetailViewController. TVNavigationController
handles the navigation between three views.

The root view starts off with GroupViewController (before:
homeDetailViewController) which shows list of groups.

When choosing a group, uses ProductionViewController (before:
GroupViewController) to show list of productions.

MainView is now MainStageView and MasterView is now HomeMasterView to
differentiate between the stage and master sidebar.

StageEditor is now DimensionsView to avoid confusion between editing
stage frames (in MainStageView) and editing the stage dimensions.

Hopefully this works

nothing new, just trying to fix some bugs I was getting

For some reason, it was missing

Groups in Xcode are NOT the same as folders (i.e. directories) in the
system. Moved all the files into their correct directories and set the
corresponding references (i.e. filepaths) in Xcode.