better msg when media sanity fails
Revert "remember tags when add cards window opened (#632)"

This reverts commit ddc85b3a39b7f46485e8c99de9c3ec9838c60c0c.
ensure we have access to col when removing notes while syncing
fix bug in media sync where we weren't fetching needed files
only show browser close menu item on mac
fix find dupes when fieldname case differs
Merge branch 'master' of github.com:dae/anki
mnemosyne importer improvements

- support cloze type
- use proper names for front/back, etc
- change <audio> to [sound:]
- change mnemosyne-style latex references