Bump mod time when editing saved searches

Fixes saved searches not getting synced when modified.
make sure we set usn when pulling in dconf from apkg
comment out high-dpi+transparent latex example
remove backspace to delete shortcut on macs

too many people activating it accidentally
bump version
reduce sync chunk size
bump version
Merge branch 'master' of https://github.com/dae/anki
fix inconsistency in default note type names

The value used internally was changed at some point and the text that
was added to the GUI was not.