add inclusion info in import screen

Dirty, but informative, way of getting people to be 

* more informed about inclusion
* less likely to import when they might want inclusion

The use of a fully qualified URI is intentional: the faq space is local
to tiddlyspace.com, not to the distribution.

Obviously this is not the tidiest of code, but, well, look around it.
Update TiddlyFileImporter.js

remove %0 format thing replace with static string
Merge pull request #6 from cdent/patch-1

add inclusion info in import screen