Add Image Fit Options

[Thomas Harning]

Some other readers (ex: MangaWatcher, Mi Manga Nu) offer options on how images are fit into the page.

For most of what I read - fit-to-width works great removing almost any need of scrolling. For ones that do need scrolling (ex: web-comic based ones) it works out quite nicely.

Options I've seen:

• Fit-to-width
• Fit-to-height
• Best fit (presumably fit both width and height)
• Original size (most likely not useful)

While reading - it would also be nice to be able to switch which one is being used vs having to back out to a configuration dialog.

(edit - fixed bullet-list style)