Faster table handling

Now the adding/removing of a comic does not force the regeration of the whole table.
Merge branch 'master' of https://github.com/alfateam123/comics-on-a-budget into newstyle
decouple the calculation from the html document

tests were failing because ComicList.whatICanBuy was trying to access a checkbox that it's only available from the application UI.
now, a default value is given instead of taking it from the UI.
still decoupling
Merge pull request #3 from alfateam123/newstyle

Fastening the table rendering