Restore Compat class for Nooks, e.g. Simple Touch.
Merge pull request #301 from agrueneberg/fix-nook-crash

Restore Compat class for Nook Simple Touch.
Fixed width of congrats message
Merge pull request #303 from martindisch/develop

Fixed width of congrats message
PreviewClass -> Previewer and remove gestures from it.

Also, I've fixed the identetion problems I had.

Reviewer and PreviewClass inheriting from an AbstractFlashcardViewer.
Hopefully it will fix the messy of PreviewClass.
Bumped version to 2.2alpha45
@branch-specific
Merge pull request #305 from brunodea/reviewer-previewclass

Trying to fix the PreviewClass messiness.
Bumped version to 2.2alpha46
@branch-specific
Cleanup of Card.java. Update up to Anki 2.0.23.

- Mostly formatting changes.
- Remove dead/commented out code.
- Added some asserts and renamed some methods to match libanki.
- Use separate methods for fetching simple interface content instead of modifying  libanki methods.
- Removed suspicious flag from flush() that skipped some values. This was used by our custom undo code which needs to be revisited in the future.