Make feature specs applescript less fragile

For xcode 6. We need to add a new target, but there are no shortcut for this.
Blindly selecting the menu item is prone to failure (because playgrounds were
added and broke these scripts). Using the built in help SEEMS better, although
there are a lot of sleeps in here
Stop using precompiled headers for test bundles

These are no longer linked by default.

Also, fixed up the ancestors to get xcode 6 support for OS X
testing bundles.
Use tab keystrokes instead of load-bearing whitespace
XCode 6 support for iOS templates
Project template rakefiles use correct simulator name

Pulled from Cedar's Rakefile.