add separate is:buried and use with filtered deck (dae/anki cf51f33)
bury card option (dae/anki a9c9452)
Fix missing parameter in forgetCards query.
Added new burying options in option groups

Also removed the now unused sibling settings.
Add unbury option to congrats screen and fix unbury query.

The "back to study screen" button was removed in this commit to make space for the unbury button. It was not very useful in the first place as it duplicated the function of the back button.
Merge pull request #117 from hssm/burying

Burying: UI changes, catch up to new commits, and some fixes