Pre-compile all the AppleScripts

We're hoping that this will help us avoid the weird errors that
look like syntax issues when we run our tests on Travis.
Rename various AppleScript files to give them scpt extensions

Gives scpt extensions to our various AppleScript files so that if
you try to open them in the finder the files will be opened in
the AppleScript editor.
Merge pull request #7 from inkling/precompiled_scripts

Precompiled scripts