New dictionaries :
- Danish
- Greek
- Finnish
- Lithuanian
- Latvian
- Dutch
- Polish
- Russian
- Slovene
- Serbian
- Swedish
- Turkish

Also, compress those files to reduce the footprint in the
repository.
Also, update and improve English and French dictionaries, and
add the ligatures shortcut into the French dictionary.
Finally, move the Russian binary dictionary here now that it
can at last be open sourced.

Bug: 5587752
Bug: 6775251
Bug: 6995793
Bug: 7149666
Change-Id: Iec9831d4dce425a2b5b0657571e4448436610525