TiddlySpaceFollowing refactor
TiddlySpaceFollowing refactor

* generalised the scan macro. Now much more powerful/customisable.
* Adjusted template mechanism - now allows you to use TiddlyWiki macros on output
eg. <<view title text>> will show the title of the tiddler in the search result sent
from tsScan.
* Now templates for FollowersTemplate/FollowingTemplate/ScanTemplate and can pass your own template
* removed reply button on external tiddlers that happen to have same name as your tiddler
instead added link to your own version - replying in this way didnt seem to work.
* fleshed out tests.
* to address 339, following button doesnt appear if not logged in.

TiddlySpace/tiddlyspace,FND/tiddlyspace,FND/tiddlyspace,TiddlySpace/tiddlyspace,FND/tiddlyspace,TiddlySpace/tiddlyspace