Optional, third priority updates

Finally, after implementing this and this, I am planning on tackling some of the bigger issues like:

• possible to sort items in user order, e.g., based on location in store? (like ability to drag and drop the categories)

• anyway to not have to have a category? (for example a list for car might have wash, gas, service, and pickup parts, so doesn't need categories) I may make this a config option to have a default category always created for you,

• Support optional information elements per item instead of just a name, including "Done" string and a note/description field - Right now I don't see a need for it. The intent was for Reverse Checklist to be simple, and I don't want to make it more complicated than it needs to be.
  

• Maybe support states besides just done/undone, like "skipped" and "problem" - Same as above
  

• Show all of the items much like you do on the "ToDo Report", but allow me to edit  or delete any item. This would make much easier to select an item regardless of the category.

• Have a search feature to be able to find an item.