[Dev] core schema changed

[Andi Vajda]

After your next 'svn update' you need to re-create your repository.

I made the following changes:

    - renamed 'persist' attribute aspect to 'persisted'
    - added 'indexed' attribute aspect
    - added LocalizableString, a Struct type around a stand-in class
    - added Text, an Alias for UString, LocalizableString to chandler pack

Brian, the stand-in implementationType for the LocalizableString type is in 
repository/packs/chandler/Types.py, feel free to move it elsewhere if you 
like.

Andi..