Comment 9 for bug 357091

Here's my thoughts on how this ought to work:

There should be a menu item 'Tasks > Import' which pops up a dialog.

The dialog should be modeled after the one in OpenOffice.org Spreadsheet that pops up if you select multi-line text and then do 'Edit > Paste Special'.

The dialog would show some widgets for identifying the formatting of the input file at the top (or on the left). At the bottom (or the right) it would show a scrollable preview of the tasks that would be imported.

Widgets would include things like identifying whether spaces/tabs are used to identify:
 * subtasks vs. continuation of a tasks description
 * bullets used to identify each task
   + different bullets used for sub-tasks
 * how completed tasks are marked (DONE)
 * [bryce] how assigned tasks are marked