Text File edit feature and SilvaFlashAsset

Greetings,

I wanted you all to know that I've made a few changes in svn, to the trunks of 
Silva and SilvaFlashAsset.  Primarily this is in response to a need for 
increased Flash capabilities in Silva.

First, Silva:
The SilvaFile edit interface in the SMI now provides a text box to edit 
textual content that is under 150K.  This "should" work for both those using 
the normal ZODBFiles, and those using a FilesService to store SilvaFile 
content in the filesystem.  BUT, I don't have a FilesService setup, so if 
someone could verify/test this??

Supported mime types are text/* and application/x-javascript.  Let me know if 
there are other mime types that are text and should be allowed.

Second, SilvaFlashAsset:
I've done some major refactoring.  The goal of this refactoring is to make 
SilvaFlashAsset's more "SilvaCodeSource-like", so that the public rendering 
and the parameters form can be edited.  The current version uses a global 
form and edit template.

With new FlashAssets, you can edit the parameters form and the public view 
script in the ZMI, just like any other code source.

Note: a major change here will break existing SilvaFlash objects if you 
install this and don't upgrade...you'll get an AttributeError about '_file'.

So there it is.  Let me know what you think.

Cheers,
Andy