Main window cleanups and couple of bugs
Cleaned up top bar
	Added Tivo logo
	Put download controls (directory, format) on right
	Put display controls (Tivos and Find) on left
  	Removed "Change" button for download dir (directory is its own button)
Sorting Channel column numerically instead of alphabetically
Fixed Xcode6 problem of disappearing columns (see xib austoscaling)

Fixed a couple of type issues introduced by compiler fixes
Avoid nil references in ProgramTable cellforRow