Update LEAP export TODO with more info about exporting views.

htdocs/export/leap/TODO

@@ -4,6 +4,10 @@ TODOs for export LEAP plugin
 * Granular export: Check that we respect $this->views and $this->artefacts correctly
 * Resume dates on export - can't export them as leap:dates, it has to be in the content, yet we have to import them again properly too
 * Export views properly!
+ - flag artefacts in the export properly that aren't otherwise surrounded by <a> or similar (e.g. blogs)
+ - rewrite links to views when the views are part of the export
+ - export special attributes on blocktypes to help us detect them on the way in (do this in combination with advanced import)
+ - what about smilies?
 * Documentation
  - developer
  - end-user