Create SpellsModel

It's pretty much the table in a model, except with fields as roles
instead of columns.
Create Spells Tab

It currently looks like ass (default linux theme). I'll either try
to get Breeze in there, or do something to make it look pretty.
Make spell list look pretty

All in all, I didn't really need breeze... or a fancy graphic
designer artsy person.

It's slow as shit to load though - but that can be fixed with some
good old fashioned engineerin'
Fix slowness of spell list

I feel some adverse effects of it might catch up with me, but oh
well...
Make MainSheet the primary tab

Because, let's face it... it's more useful.