remove line wrapping items from preferences window (they didn't do an…

…ything anyway)

fix my name in some comment blocks

bump version number to 4.0

Implement sandboxing:

 * add developer certificate for code signing
 * add entitlement to read/write user selected files
 * add entitlement for printing
 * refactor File -> Open Quickly to work with sandboxing (users must now browse to the open quickly search path, before it can be used)

bugfix php highlighter's handling of keywords with _ in the name

closes #27